X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=blobdiff_plain;f=src%2Fdrivers%2Fao_cc1120.c;h=3ea8b7044b4cecb25f1880f5be5a3b1bbfb066cd;hp=37dc67db9f8612eb2776e5e9721910dad2563041;hb=f395bcaa620490954d4a42de9b4870bc12bedc91;hpb=93e6d0a2c0b60e7bedd34f06ba63b468dcc8e013 diff --git a/src/drivers/ao_cc1120.c b/src/drivers/ao_cc1120.c index 37dc67db..3ea8b704 100644 --- a/src/drivers/ao_cc1120.c +++ b/src/drivers/ao_cc1120.c @@ -18,19 +18,33 @@ #include #include #include +#include +#include -uint8_t ao_radio_wake; -uint8_t ao_radio_mutex; -uint8_t ao_radio_abort; +#define AO_RADIO_MAX_RECV sizeof(struct ao_packet) +#define AO_RADIO_MAX_SEND sizeof(struct ao_packet) -#define CC1120_DEBUG 1 +static uint8_t ao_radio_mutex; -uint32_t ao_radio_cal = 0x6ca333; +static uint8_t ao_radio_wake; /* radio ready. Also used as sleep address */ +static uint8_t ao_radio_abort; /* radio operation should abort */ +static uint8_t ao_radio_mcu_wake; /* MARC status change */ +static uint8_t ao_radio_marc_status; /* Last read MARC status value */ +static uint8_t ao_radio_tx_finished; /* MARC status indicates TX finished */ + +int8_t ao_radio_rssi; /* Last received RSSI value */ + +#define CC1120_DEBUG AO_FEC_DEBUG +#define CC1120_TRACE 0 + +extern const uint32_t ao_radio_cal; #define FOSC 32000000 -#define ao_radio_select() ao_spi_get_mask(AO_CC1120_SPI_CS_PORT,(1 << AO_CC1120_SPI_CS_PIN),AO_CC1120_SPI_BUS) +#define ao_radio_try_select(task_id) ao_spi_try_get_mask(AO_CC1120_SPI_CS_PORT,(1 << AO_CC1120_SPI_CS_PIN),AO_CC1120_SPI_BUS,AO_SPI_SPEED_4MHz, task_id) +#define ao_radio_select() ao_spi_get_mask(AO_CC1120_SPI_CS_PORT,(1 << AO_CC1120_SPI_CS_PIN),AO_CC1120_SPI_BUS,AO_SPI_SPEED_4MHz) #define ao_radio_deselect() ao_spi_put_mask(AO_CC1120_SPI_CS_PORT,(1 << AO_CC1120_SPI_CS_PIN),AO_CC1120_SPI_BUS) +#define ao_radio_spi_send_sync(d,l) ao_spi_send_sync((d), (l), AO_CC1120_SPI_BUS) #define ao_radio_spi_send(d,l) ao_spi_send((d), (l), AO_CC1120_SPI_BUS) #define ao_radio_spi_send_fixed(d,l) ao_spi_send_fixed((d), (l), AO_CC1120_SPI_BUS) #define ao_radio_spi_recv(d,l) ao_spi_recv((d), (l), AO_CC1120_SPI_BUS) @@ -42,7 +56,7 @@ ao_radio_reg_read(uint16_t addr) uint8_t data[2]; uint8_t d; -#if CC1120_DEBUG +#if CC1120_TRACE printf("\t\tao_radio_reg_read (%04x): ", addr); flush(); #endif if (CC1120_IS_EXTENDED(addr)) { @@ -61,7 +75,7 @@ ao_radio_reg_read(uint16_t addr) ao_radio_spi_send(data, d); ao_radio_spi_recv(data, 1); ao_radio_deselect(); -#if CC1120_DEBUG +#if CC1120_TRACE printf (" %02x\n", data[0]); #endif return data[0]; @@ -73,7 +87,7 @@ ao_radio_reg_write(uint16_t addr, uint8_t value) uint8_t data[3]; uint8_t d; -#if CC1120_DEBUG +#if CC1120_TRACE printf("\t\tao_radio_reg_write (%04x): %02x\n", addr, value); #endif if (CC1120_IS_EXTENDED(addr)) { @@ -94,23 +108,53 @@ ao_radio_reg_write(uint16_t addr, uint8_t value) ao_radio_deselect(); } +static void +_ao_radio_burst_read_start (uint16_t addr) +{ + uint8_t data[2]; + uint8_t d; + + if (CC1120_IS_EXTENDED(addr)) { + data[0] = ((1 << CC1120_READ) | + (1 << CC1120_BURST) | + CC1120_EXTENDED); + data[1] = addr; + d = 2; + } else { + data[0] = ((1 << CC1120_READ) | + (1 << CC1120_BURST) | + addr); + d = 1; + } + + ao_radio_spi_send_sync(data, d); +} + +static void +ao_radio_burst_read_stop (void) +{ + ao_radio_deselect(); +} + + static uint8_t ao_radio_strobe(uint8_t addr) { uint8_t in; -#if CC1120_DEBUG +#if CC1120_TRACE printf("\t\tao_radio_strobe (%02x): ", addr); flush(); #endif ao_radio_select(); ao_radio_duplex(&addr, &in, 1); ao_radio_deselect(); -#if CC1120_DEBUG - printf("%02x\n", in); +#if CC1120_TRACE + printf("%02x\n", in); flush(); #endif return in; } +#if 0 static uint8_t ao_radio_fifo_read(uint8_t *data, uint8_t len) { @@ -125,9 +169,10 @@ ao_radio_fifo_read(uint8_t *data, uint8_t len) ao_radio_deselect(); return status; } +#endif static uint8_t -ao_radio_fifo_write(uint8_t *data, uint8_t len) +ao_radio_fifo_write_start(void) { uint8_t addr = ((0 << CC1120_READ) | (1 << CC1120_BURST) | @@ -136,33 +181,43 @@ ao_radio_fifo_write(uint8_t *data, uint8_t len) ao_radio_select(); ao_radio_duplex(&addr, &status, 1); - ao_radio_spi_send(data, len); + return status; +} + +static inline uint8_t ao_radio_fifo_write_stop(uint8_t status) { ao_radio_deselect(); return status; } static uint8_t -ao_radio_fifo_write_fixed(uint8_t data, uint8_t len) +ao_radio_fifo_write(uint8_t *data, uint8_t len) { - uint8_t addr = ((0 << CC1120_READ) | - (1 << CC1120_BURST) | - CC1120_FIFO); - uint8_t status; + uint8_t status = ao_radio_fifo_write_start(); + ao_radio_spi_send(data, len); + return ao_radio_fifo_write_stop(status); +} - printf ("num tx bytes: %d\n", ao_radio_reg_read(CC1120_NUM_TXBYTES)); - ao_radio_select(); - ao_radio_duplex(&addr, &status, 1); +static uint8_t +ao_radio_fifo_write_fixed(uint8_t data, uint8_t len) +{ + uint8_t status = ao_radio_fifo_write_start(); ao_radio_spi_send_fixed(data, len); - ao_radio_deselect(); - printf ("num tx bytes: %d\n", ao_radio_reg_read(CC1120_NUM_TXBYTES)); - return status; + return ao_radio_fifo_write_stop(status); } +static uint8_t +ao_radio_tx_fifo_space(void) +{ + return CC1120_FIFO_SIZE - ao_radio_reg_read(CC1120_NUM_TXBYTES); +} + +#if CC1120_DEBUG static uint8_t ao_radio_status(void) { return ao_radio_strobe (CC1120_SNOP); } +#endif void ao_radio_recv_abort(void) @@ -173,6 +228,214 @@ ao_radio_recv_abort(void) #define ao_radio_rdf_value 0x55 +static uint8_t +ao_radio_get_marc_status(void) +{ + return ao_radio_reg_read(CC1120_MARC_STATUS1); +} + +static void +ao_radio_mcu_wakeup_isr(void) +{ + ao_radio_mcu_wake = 1; + ao_wakeup(&ao_radio_wake); +} + + +static void +ao_radio_check_marc_status(void) +{ + ao_radio_mcu_wake = 0; + ao_radio_marc_status = ao_radio_get_marc_status(); + + /* Anyt other than 'tx/rx finished' means an error occurred */ + if (ao_radio_marc_status & ~(CC1120_MARC_STATUS1_TX_FINISHED|CC1120_MARC_STATUS1_RX_FINISHED)) + ao_radio_abort = 1; + if (ao_radio_marc_status & (CC1120_MARC_STATUS1_TX_FINISHED)) + ao_radio_tx_finished = 1; +} + +static void +ao_radio_isr(void) +{ + ao_exti_disable(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN); + ao_radio_wake = 1; + ao_wakeup(&ao_radio_wake); +} + +static void +ao_radio_start_tx(void) +{ + ao_exti_set_callback(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, ao_radio_isr); + ao_exti_enable(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN); + ao_exti_enable(AO_CC1120_MCU_WAKEUP_PORT, AO_CC1120_MCU_WAKEUP_PIN); + ao_radio_tx_finished = 0; + ao_radio_strobe(CC1120_STX); +} + +static void +ao_radio_idle(void) +{ + for (;;) { + uint8_t state = (ao_radio_strobe(CC1120_SIDLE) >> CC1120_STATUS_STATE) & CC1120_STATUS_STATE_MASK; + if (state == CC1120_STATUS_STATE_IDLE) + break; + if (state == CC1120_STATUS_STATE_TX_FIFO_ERROR) + ao_radio_strobe(CC1120_SFTX); + if (state == CC1120_STATUS_STATE_RX_FIFO_ERROR) + ao_radio_strobe(CC1120_SFRX); + } + /* Flush any pending TX bytes */ + ao_radio_strobe(CC1120_SFTX); +} + +/* + * Packet deviation + * + * fdev = fosc >> 24 * (256 + dev_m) << dev_e + * + * Deviation for 38400 baud should be 20.5kHz: + * + * 32e6Hz / (2 ** 24) * (256 + 80) * (2 ** 5) = 20508Hz + * + * Deviation for 9600 baud should be 5.125kHz: + * + * 32e6Hz / (2 ** 24) * (256 + 80) * (2 ** 3) = 5127Hz + * + * Deviation for 2400 baud should be 1.28125kHz, but cc1111 and + * cc115l can't do that, so we'll use 1.5kHz instead: + * + * 32e6Hz / (2 ** 24) * (256 + 137) * (2 ** 1) = 1499Hz + */ + +#define PACKET_DEV_M_384 80 +#define PACKET_DEV_E_384 5 + +#define PACKET_DEV_M_96 80 +#define PACKET_DEV_E_96 3 + +#define PACKET_DEV_M_24 137 +#define PACKET_DEV_E_24 1 + +/* + * For our packet data + * + * (2**20 + DATARATE_M) * 2 ** DATARATE_E + * Rdata = -------------------------------------- * fosc + * 2 ** 39 + * + * Given the bit period of the baseband, T, the bandwidth of the + * baseband signal is B = 1/(2T). The overall bandwidth of the + * modulated signal is then Channel bandwidth = 2Δf + 2B. + * + * 38400 -- 2 * 20500 + 38400 = 79.4 kHz + * 9600 -- 2 * 5.125 + 9600 = 19.9 kHz + * 2400 -- 2 * 1.5 + 2400 = 5.4 khz + * + * Symbol rate 38400 Baud: + * + * DATARATE_M = 239914 + * DATARATE_E = 9 + * CHANBW = 79.4 (round to 100) + * + * Symbol rate 9600 Baud: + * + * DATARATE_M = 239914 + * DATARATE_E = 7 + * CHANBW = 19.9 (round to 20) + * + * Symbol rate 2400 Baud: + * + * DATARATE_M = 239914 + * DATARATE_E = 5 + * CHANBW = 5.0 (round to 8.0) + */ + +#define PACKET_DRATE_M 239914 + +#define PACKET_DRATE_E_384 9 + +/* 200 / 2 = 100 */ +#define PACKET_CHAN_BW_384 ((0 << CC1120_CHAN_BW_CHFILT_BYPASS) | \ + (CC1120_CHAN_BW_ADC_CIC_DECFACT_20 << CC1120_CHAN_BW_ADC_CIC_DECFACT) | \ + (2 << CC1120_CHAN_BW_BB_CIC_DECFACT)) + +#define PACKET_DRATE_E_96 7 +/* 200 / 10 = 20 */ +#define PACKET_CHAN_BW_96 ((0 << CC1120_CHAN_BW_CHFILT_BYPASS) | \ + (CC1120_CHAN_BW_ADC_CIC_DECFACT_20 << CC1120_CHAN_BW_ADC_CIC_DECFACT) | \ + (10 << CC1120_CHAN_BW_BB_CIC_DECFACT)) + +#define PACKET_DRATE_E_24 5 +/* 200 / 25 = 8 */ +#define PACKET_CHAN_BW_24 ((0 << CC1120_CHAN_BW_CHFILT_BYPASS) | \ + (CC1120_CHAN_BW_ADC_CIC_DECFACT_20 << CC1120_CHAN_BW_ADC_CIC_DECFACT) | \ + (25 << CC1120_CHAN_BW_BB_CIC_DECFACT)) + +static const uint16_t packet_setup[] = { + CC1120_DRATE1, ((PACKET_DRATE_M >> 8) & 0xff), + CC1120_DRATE0, ((PACKET_DRATE_M >> 0) & 0xff), + CC1120_PKT_CFG2, ((CC1120_PKT_CFG2_CCA_MODE_ALWAYS_CLEAR << CC1120_PKT_CFG2_CCA_MODE) | + (CC1120_PKT_CFG2_PKT_FORMAT_NORMAL << CC1120_PKT_CFG2_PKT_FORMAT)), + CC1120_PKT_CFG1, ((0 << CC1120_PKT_CFG1_WHITE_DATA) | + (CC1120_PKT_CFG1_ADDR_CHECK_CFG_NONE << CC1120_PKT_CFG1_ADDR_CHECK_CFG) | + (CC1120_PKT_CFG1_CRC_CFG_DISABLED << CC1120_PKT_CFG1_CRC_CFG) | + (0 << CC1120_PKT_CFG1_APPEND_STATUS)), + CC1120_PKT_CFG0, ((0 << CC1120_PKT_CFG0_RESERVED7) | + (CC1120_PKT_CFG0_LENGTH_CONFIG_FIXED << CC1120_PKT_CFG0_LENGTH_CONFIG) | + (0 << CC1120_PKT_CFG0_PKG_BIT_LEN) | + (0 << CC1120_PKT_CFG0_UART_MODE_EN) | + (0 << CC1120_PKT_CFG0_UART_SWAP_EN)), + CC1120_PREAMBLE_CFG1, ((CC1120_PREAMBLE_CFG1_NUM_PREAMBLE_4_BYTES << CC1120_PREAMBLE_CFG1_NUM_PREAMBLE) | + (CC1120_PREAMBLE_CFG1_PREAMBLE_WORD_AA << CC1120_PREAMBLE_CFG1_PREAMBLE_WORD)), + AO_CC1120_MARC_GPIO_IOCFG, CC1120_IOCFG_GPIO_CFG_MARC_MCU_WAKEUP, +}; + +static const uint16_t packet_setup_384[] = { + CC1120_DEVIATION_M, PACKET_DEV_M_384, + CC1120_MODCFG_DEV_E, ((CC1120_MODCFG_DEV_E_MODEM_MODE_NORMAL << CC1120_MODCFG_DEV_E_MODEM_MODE) | + (CC1120_MODCFG_DEV_E_MOD_FORMAT_2_GFSK << CC1120_MODCFG_DEV_E_MOD_FORMAT) | + (PACKET_DEV_E_384 << CC1120_MODCFG_DEV_E_DEV_E)), + CC1120_DRATE2, ((PACKET_DRATE_E_384 << CC1120_DRATE2_DATARATE_E) | + (((PACKET_DRATE_M >> 16) & CC1120_DRATE2_DATARATE_M_19_16_MASK) << CC1120_DRATE2_DATARATE_M_19_16)), + CC1120_CHAN_BW, PACKET_CHAN_BW_384, + CC1120_PA_CFG0, 0x7b, +}; + +static const uint16_t packet_setup_96[] = { + CC1120_DEVIATION_M, PACKET_DEV_M_96, + CC1120_MODCFG_DEV_E, ((CC1120_MODCFG_DEV_E_MODEM_MODE_NORMAL << CC1120_MODCFG_DEV_E_MODEM_MODE) | + (CC1120_MODCFG_DEV_E_MOD_FORMAT_2_GFSK << CC1120_MODCFG_DEV_E_MOD_FORMAT) | + (PACKET_DEV_E_96 << CC1120_MODCFG_DEV_E_DEV_E)), + CC1120_DRATE2, ((PACKET_DRATE_E_96 << CC1120_DRATE2_DATARATE_E) | + (((PACKET_DRATE_M >> 16) & CC1120_DRATE2_DATARATE_M_19_16_MASK) << CC1120_DRATE2_DATARATE_M_19_16)), + CC1120_CHAN_BW, PACKET_CHAN_BW_96, + CC1120_PA_CFG0, 0x7d, +}; + +static const uint16_t packet_setup_24[] = { + CC1120_DEVIATION_M, PACKET_DEV_M_24, + CC1120_MODCFG_DEV_E, ((CC1120_MODCFG_DEV_E_MODEM_MODE_NORMAL << CC1120_MODCFG_DEV_E_MODEM_MODE) | + (CC1120_MODCFG_DEV_E_MOD_FORMAT_2_GFSK << CC1120_MODCFG_DEV_E_MOD_FORMAT) | + (PACKET_DEV_E_24 << CC1120_MODCFG_DEV_E_DEV_E)), + CC1120_DRATE2, ((PACKET_DRATE_E_24 << CC1120_DRATE2_DATARATE_E) | + (((PACKET_DRATE_M >> 16) & CC1120_DRATE2_DATARATE_M_19_16_MASK) << CC1120_DRATE2_DATARATE_M_19_16)), + CC1120_CHAN_BW, PACKET_CHAN_BW_24, + CC1120_PA_CFG0, 0x7e, +}; + +static const uint16_t packet_tx_setup[] = { + CC1120_PKT_CFG2, ((CC1120_PKT_CFG2_CCA_MODE_ALWAYS_CLEAR << CC1120_PKT_CFG2_CCA_MODE) | + (CC1120_PKT_CFG2_PKT_FORMAT_NORMAL << CC1120_PKT_CFG2_PKT_FORMAT)), + AO_CC1120_INT_GPIO_IOCFG, CC1120_IOCFG_GPIO_CFG_RX0TX1_CFG, +}; + +static const uint16_t packet_rx_setup[] = { + CC1120_PKT_CFG2, ((CC1120_PKT_CFG2_CCA_MODE_ALWAYS_CLEAR << CC1120_PKT_CFG2_CCA_MODE) | + (CC1120_PKT_CFG2_PKT_FORMAT_SYNCHRONOUS_SERIAL << CC1120_PKT_CFG2_PKT_FORMAT)), + AO_CC1120_INT_GPIO_IOCFG, CC1120_IOCFG_GPIO_CFG_CLKEN_SOFT, +}; + /* * RDF deviation is 5kHz * @@ -188,12 +451,12 @@ ao_radio_recv_abort(void) /* * For our RDF beacon, set the symbol rate to 2kBaud (for a 1kHz tone) * - * (2**20 - DATARATE_M) * 2 ** DATARATE_E + * (2**20 + DATARATE_M) * 2 ** DATARATE_E * Rdata = -------------------------------------- * fosc * 2 ** 39 * - * DATARATE_M = 511705 - * DATARATE_E = 6 + * DATARATE_M = 25166 + * DATARATE_E = 5 * * To make the tone last for 200ms, we need 2000 * .2 = 400 bits or 50 bytes */ @@ -221,72 +484,303 @@ static const uint16_t rdf_setup[] = { (0 << CC1120_PKT_CFG0_PKG_BIT_LEN) | (0 << CC1120_PKT_CFG0_UART_MODE_EN) | (0 << CC1120_PKT_CFG0_UART_SWAP_EN)), + CC1120_PREAMBLE_CFG1, ((CC1120_PREAMBLE_CFG1_NUM_PREAMBLE_NONE << CC1120_PREAMBLE_CFG1_NUM_PREAMBLE) | + (CC1120_PREAMBLE_CFG1_PREAMBLE_WORD_AA << CC1120_PREAMBLE_CFG1_PREAMBLE_WORD)), + CC1120_PA_CFG0, 0x7e, }; -#define int_pin(w) printf("\t%s: %d\n", \ - w,\ - (AO_CC1120_INT_PORT.idr >> AO_CC1120_INT_PIN) & 1) +/* + * APRS deviation is 3kHz + * + * fdev = fosc >> 24 * (256 + dev_m) << dev_e + * + * 32e6Hz / (2 ** 24) * (256 + 137) * (2 ** 2) = 2998Hz + */ + +#define APRS_DEV_E 2 +#define APRS_DEV_M 137 -static uint8_t -ao_radio_marc_status(void) +/* + * For our APRS beacon, set the symbol rate to 9.6kBaud (8x oversampling for 1200 baud data rate) + * + * (2**20 + DATARATE_M) * 2 ** DATARATE_E + * Rdata = -------------------------------------- * fosc + * 2 ** 39 + * + * DATARATE_M = 239914 + * DATARATE_E = 7 + * + * Rdata = 9599.998593330383301 + * + */ +#define APRS_DRATE_E 7 +#define APRS_DRATE_M 239914 + +static const uint16_t aprs_setup[] = { + CC1120_DEVIATION_M, APRS_DEV_M, + CC1120_MODCFG_DEV_E, ((CC1120_MODCFG_DEV_E_MODEM_MODE_NORMAL << CC1120_MODCFG_DEV_E_MODEM_MODE) | + (CC1120_MODCFG_DEV_E_MOD_FORMAT_2_GFSK << CC1120_MODCFG_DEV_E_MOD_FORMAT) | + (APRS_DEV_E << CC1120_MODCFG_DEV_E_DEV_E)), + CC1120_DRATE2, ((APRS_DRATE_E << CC1120_DRATE2_DATARATE_E) | + (((APRS_DRATE_M >> 16) & CC1120_DRATE2_DATARATE_M_19_16_MASK) << CC1120_DRATE2_DATARATE_M_19_16)), + CC1120_DRATE1, ((APRS_DRATE_M >> 8) & 0xff), + CC1120_DRATE0, ((APRS_DRATE_M >> 0) & 0xff), + CC1120_PKT_CFG2, ((CC1120_PKT_CFG2_CCA_MODE_ALWAYS_CLEAR << CC1120_PKT_CFG2_CCA_MODE) | + (CC1120_PKT_CFG2_PKT_FORMAT_NORMAL << CC1120_PKT_CFG2_PKT_FORMAT)), + CC1120_PKT_CFG1, ((0 << CC1120_PKT_CFG1_WHITE_DATA) | + (CC1120_PKT_CFG1_ADDR_CHECK_CFG_NONE << CC1120_PKT_CFG1_ADDR_CHECK_CFG) | + (CC1120_PKT_CFG1_CRC_CFG_DISABLED << CC1120_PKT_CFG1_CRC_CFG) | + (0 << CC1120_PKT_CFG1_APPEND_STATUS)), + CC1120_PREAMBLE_CFG1, ((CC1120_PREAMBLE_CFG1_NUM_PREAMBLE_NONE << CC1120_PREAMBLE_CFG1_NUM_PREAMBLE) | + (CC1120_PREAMBLE_CFG1_PREAMBLE_WORD_AA << CC1120_PREAMBLE_CFG1_PREAMBLE_WORD)), + CC1120_PA_CFG0, 0x7d, +}; + +/* + * For Test mode, we want an unmodulated carrier. To do that, we + * set the deviation to zero and enable a preamble so that the radio + * turns on before we send any data + */ + +static const uint16_t test_setup[] = { + CC1120_DEVIATION_M, 0, + CC1120_MODCFG_DEV_E, ((CC1120_MODCFG_DEV_E_MODEM_MODE_NORMAL << CC1120_MODCFG_DEV_E_MODEM_MODE) | + (CC1120_MODCFG_DEV_E_MOD_FORMAT_2_GFSK << CC1120_MODCFG_DEV_E_MOD_FORMAT) | + (0 << CC1120_MODCFG_DEV_E_DEV_E)), + CC1120_DRATE2, ((APRS_DRATE_E << CC1120_DRATE2_DATARATE_E) | + (((APRS_DRATE_M >> 16) & CC1120_DRATE2_DATARATE_M_19_16_MASK) << CC1120_DRATE2_DATARATE_M_19_16)), + CC1120_DRATE1, ((APRS_DRATE_M >> 8) & 0xff), + CC1120_DRATE0, ((APRS_DRATE_M >> 0) & 0xff), + CC1120_PKT_CFG2, ((CC1120_PKT_CFG2_CCA_MODE_ALWAYS_CLEAR << CC1120_PKT_CFG2_CCA_MODE) | + (CC1120_PKT_CFG2_PKT_FORMAT_NORMAL << CC1120_PKT_CFG2_PKT_FORMAT)), + CC1120_PKT_CFG1, ((0 << CC1120_PKT_CFG1_WHITE_DATA) | + (CC1120_PKT_CFG1_ADDR_CHECK_CFG_NONE << CC1120_PKT_CFG1_ADDR_CHECK_CFG) | + (CC1120_PKT_CFG1_CRC_CFG_DISABLED << CC1120_PKT_CFG1_CRC_CFG) | + (0 << CC1120_PKT_CFG1_APPEND_STATUS)), + CC1120_PREAMBLE_CFG1, ((CC1120_PREAMBLE_CFG1_NUM_PREAMBLE_4_BYTES << CC1120_PREAMBLE_CFG1_NUM_PREAMBLE) | + (CC1120_PREAMBLE_CFG1_PREAMBLE_WORD_AA << CC1120_PREAMBLE_CFG1_PREAMBLE_WORD)), +}; + +#define AO_PKT_CFG0_INFINITE ((0 << CC1120_PKT_CFG0_RESERVED7) | \ + (CC1120_PKT_CFG0_LENGTH_CONFIG_INFINITE << CC1120_PKT_CFG0_LENGTH_CONFIG) | \ + (0 << CC1120_PKT_CFG0_PKG_BIT_LEN) | \ + (0 << CC1120_PKT_CFG0_UART_MODE_EN) | \ + (0 << CC1120_PKT_CFG0_UART_SWAP_EN)) + +#define AO_PKT_CFG0_FIXED ((0 << CC1120_PKT_CFG0_RESERVED7) | \ + (CC1120_PKT_CFG0_LENGTH_CONFIG_FIXED << CC1120_PKT_CFG0_LENGTH_CONFIG) | \ + (0 << CC1120_PKT_CFG0_PKG_BIT_LEN) | \ + (0 << CC1120_PKT_CFG0_UART_MODE_EN) | \ + (0 << CC1120_PKT_CFG0_UART_SWAP_EN)) + +static uint16_t ao_radio_mode; + +#define AO_RADIO_MODE_BITS_PACKET 1 +#define AO_RADIO_MODE_BITS_PACKET_TX 2 +#define AO_RADIO_MODE_BITS_TX_BUF 4 +#define AO_RADIO_MODE_BITS_TX_FINISH 8 +#define AO_RADIO_MODE_BITS_PACKET_RX 16 +#define AO_RADIO_MODE_BITS_RDF 32 +#define AO_RADIO_MODE_BITS_APRS 64 +#define AO_RADIO_MODE_BITS_TEST 128 +#define AO_RADIO_MODE_BITS_INFINITE 256 +#define AO_RADIO_MODE_BITS_FIXED 512 + +#define AO_RADIO_MODE_NONE 0 +#define AO_RADIO_MODE_PACKET_TX_BUF (AO_RADIO_MODE_BITS_PACKET | AO_RADIO_MODE_BITS_PACKET_TX | AO_RADIO_MODE_BITS_TX_BUF) +#define AO_RADIO_MODE_PACKET_TX_FINISH (AO_RADIO_MODE_BITS_PACKET | AO_RADIO_MODE_BITS_PACKET_TX | AO_RADIO_MODE_BITS_TX_FINISH) +#define AO_RADIO_MODE_PACKET_RX (AO_RADIO_MODE_BITS_PACKET | AO_RADIO_MODE_BITS_PACKET_RX) +#define AO_RADIO_MODE_RDF (AO_RADIO_MODE_BITS_RDF | AO_RADIO_MODE_BITS_TX_FINISH) +#define AO_RADIO_MODE_APRS_BUF (AO_RADIO_MODE_BITS_APRS | AO_RADIO_MODE_BITS_INFINITE | AO_RADIO_MODE_BITS_TX_BUF) +#define AO_RADIO_MODE_APRS_LAST_BUF (AO_RADIO_MODE_BITS_APRS | AO_RADIO_MODE_BITS_FIXED | AO_RADIO_MODE_BITS_TX_BUF) +#define AO_RADIO_MODE_APRS_FINISH (AO_RADIO_MODE_BITS_APRS | AO_RADIO_MODE_BITS_FIXED | AO_RADIO_MODE_BITS_TX_FINISH) +#define AO_RADIO_MODE_TEST (AO_RADIO_MODE_BITS_TEST | AO_RADIO_MODE_BITS_INFINITE | AO_RADIO_MODE_BITS_TX_BUF) + +static void +_ao_radio_set_regs(const uint16_t *regs, int nreg) { - return ao_radio_reg_read(CC1120_MARC_STATUS1); + int i; + + for (i = 0; i < nreg; i++) { + ao_radio_reg_write(regs[0], regs[1]); + regs += 2; + } } -static uint8_t -ao_radio_tx_done(void) +#define ao_radio_set_regs(setup) _ao_radio_set_regs(setup, (sizeof (setup) / sizeof(setup[0])) >> 1) + +static void +ao_radio_set_mode(uint16_t new_mode) +{ + uint16_t changes; + + if (new_mode == ao_radio_mode) + return; + + changes = new_mode & (~ao_radio_mode); + + if (changes & AO_RADIO_MODE_BITS_PACKET) { + ao_radio_set_regs(packet_setup); + + switch (ao_config.radio_rate) { + default: + case AO_RADIO_RATE_38400: + ao_radio_set_regs(packet_setup_384); + break; + case AO_RADIO_RATE_9600: + ao_radio_set_regs(packet_setup_96); + break; + case AO_RADIO_RATE_2400: + ao_radio_set_regs(packet_setup_24); + break; + } + } + + if (changes & AO_RADIO_MODE_BITS_PACKET_TX) + ao_radio_set_regs(packet_tx_setup); + + if (changes & AO_RADIO_MODE_BITS_TX_BUF) + ao_radio_reg_write(AO_CC1120_INT_GPIO_IOCFG, CC1120_IOCFG_GPIO_CFG_TXFIFO_THR); + + if (changes & AO_RADIO_MODE_BITS_TX_FINISH) + ao_radio_reg_write(AO_CC1120_INT_GPIO_IOCFG, CC1120_IOCFG_GPIO_CFG_RX0TX1_CFG); + + if (changes & AO_RADIO_MODE_BITS_PACKET_RX) + ao_radio_set_regs(packet_rx_setup); + + if (changes & AO_RADIO_MODE_BITS_RDF) + ao_radio_set_regs(rdf_setup); + + if (changes & AO_RADIO_MODE_BITS_APRS) + ao_radio_set_regs(aprs_setup); + + if (changes & AO_RADIO_MODE_BITS_TEST) + ao_radio_set_regs(test_setup); + + if (changes & AO_RADIO_MODE_BITS_INFINITE) + ao_radio_reg_write(CC1120_PKT_CFG0, AO_PKT_CFG0_INFINITE); + + if (changes & AO_RADIO_MODE_BITS_FIXED) + ao_radio_reg_write(CC1120_PKT_CFG0, AO_PKT_CFG0_FIXED); + + ao_radio_mode = new_mode; +} + +static const uint16_t radio_setup[] = { +#include "ao_cc1120_CC1120.h" +}; + +static uint8_t ao_radio_configured = 0; + +static void +ao_radio_setup(void) { - return ao_radio_marc_status() == CC1120_MARC_STATUS1_TX_FINISHED; + ao_radio_strobe(CC1120_SRES); + + ao_radio_set_regs(radio_setup); + + ao_radio_mode = 0; + + ao_config_get(); + + ao_radio_configured = 1; } -static uint8_t -ao_radio_rx_done(void) +static void +ao_radio_set_len(uint8_t len) { - return ao_radio_marc_status() == CC1120_MARC_STATUS1_RX_FINISHED; + static uint8_t last_len; + + if (len != last_len) { + ao_radio_reg_write(CC1120_PKT_LEN, len); + last_len = len; + } } -void -ao_radio_rdf(uint8_t len) +static void +ao_radio_get(uint8_t len) { - int i; + static uint32_t last_radio_setting; + static uint8_t last_radio_rate; - ao_radio_get(len); + ao_mutex_get(&ao_radio_mutex); + + if (!ao_radio_configured) + ao_radio_setup(); + if (ao_config.radio_setting != last_radio_setting) { + ao_radio_reg_write(CC1120_FREQ2, ao_config.radio_setting >> 16); + ao_radio_reg_write(CC1120_FREQ1, ao_config.radio_setting >> 8); + ao_radio_reg_write(CC1120_FREQ0, ao_config.radio_setting); + last_radio_setting = ao_config.radio_setting; + } + if (ao_config.radio_rate != last_radio_rate) { + ao_radio_mode &= ~AO_RADIO_MODE_BITS_PACKET; + last_radio_rate = ao_config.radio_rate; + } + ao_radio_set_len(len); +} + +#define ao_radio_put() ao_mutex_put(&ao_radio_mutex) + +static void +ao_rdf_start(uint8_t len) +{ ao_radio_abort = 0; - for (i = 0; i < sizeof (rdf_setup) / sizeof (rdf_setup[0]); i += 2) - ao_radio_reg_write(rdf_setup[i], rdf_setup[i+1]); - ao_radio_reg_write(CC1120_PKT_LEN, len); - int_pin ("Before CFG"); - ao_radio_reg_write(CC1120_IOCFG2, CC1120_IOCFG_GPIO_CFG_RX0TX1_CFG); - int_pin ("After CFG"); - ao_radio_strobe(CC1120_STX); - ao_exti_enable(&AO_CC1120_INT_PORT, AO_CC1120_INT_PIN); - int_pin ("After strobe"); - ao_delay(AO_MS_TO_TICKS(100)); - ao_radio_fifo_write_fixed(ao_radio_rdf_value, len); - int_pin ("After delay"); - cli(); - for (i = 0; i < 20; i++) { -#if CC1120_DEBUG - ao_delay(AO_MS_TO_TICKS(50)); - int_pin ("Waited"); - printf ("Status %02x num_tx_bytes %d marc status %x\n", - ao_radio_status(), - ao_radio_reg_read(CC1120_NUM_TXBYTES), - ao_radio_marc_status()); -#else + ao_radio_get(len); + + ao_radio_set_mode(AO_RADIO_MODE_RDF); + ao_radio_wake = 0; + +} + +static void +ao_rdf_run(void) +{ + ao_radio_start_tx(); + + ao_arch_block_interrupts(); + while (!ao_radio_wake && !ao_radio_abort && !ao_radio_mcu_wake) ao_sleep(&ao_radio_wake); -#endif - } - sei(); - printf ("num_tx_bytes %d marc status %x\n", - ao_radio_reg_read(CC1120_NUM_TXBYTES), - ao_radio_marc_status()); - if (!ao_radio_tx_done()) + ao_arch_release_interrupts(); + if (ao_radio_mcu_wake) + ao_radio_check_marc_status(); + if (!ao_radio_wake) ao_radio_idle(); - ao_radio_set_packet(); ao_radio_put(); } +void +ao_radio_rdf(void) +{ + ao_rdf_start(AO_RADIO_RDF_LEN); + + ao_radio_fifo_write_fixed(ao_radio_rdf_value, AO_RADIO_RDF_LEN); + + ao_rdf_run(); +} + +void +ao_radio_continuity(uint8_t c) +{ + uint8_t i; + uint8_t status; + + ao_rdf_start(AO_RADIO_CONT_TOTAL_LEN); + + status = ao_radio_fifo_write_start(); + for (i = 0; i < 3; i++) { + ao_radio_spi_send_fixed(0x00, AO_RADIO_CONT_PAUSE_LEN); + if (i < c) + ao_radio_spi_send_fixed(ao_radio_rdf_value, AO_RADIO_CONT_TONE_LEN); + else + ao_radio_spi_send_fixed(0x00, AO_RADIO_CONT_TONE_LEN); + } + ao_radio_spi_send_fixed(0x00, AO_RADIO_CONT_PAUSE_LEN); + status = ao_radio_fifo_write_stop(status); + (void) status; + ao_rdf_run(); +} + void ao_radio_rdf_abort(void) { @@ -295,10 +789,10 @@ ao_radio_rdf_abort(void) } static void -ao_radio_test(void) +ao_radio_test_cmd(void) { uint8_t mode = 2; - uint8_t radio_on; + static uint8_t radio_on; ao_cmd_white(); if (ao_cmd_lex_c != '\n') { ao_cmd_decimal(); @@ -313,9 +807,10 @@ ao_radio_test(void) ao_packet_slave_stop(); #endif ao_radio_get(0xff); + ao_radio_set_mode(AO_RADIO_MODE_TEST); ao_radio_strobe(CC1120_STX); -#if CC1120_DEBUG - { int t; +#if CC1120_TRACE + { int t; for (t = 0; t < 10; t++) { printf ("status: %02x\n", ao_radio_status()); ao_delay(AO_MS_TO_TICKS(100)); @@ -339,170 +834,382 @@ ao_radio_test(void) } } +static void +ao_radio_wait_isr(uint16_t timeout) +{ + if (timeout) + ao_alarm(timeout); + ao_arch_block_interrupts(); + while (!ao_radio_wake && !ao_radio_mcu_wake && !ao_radio_abort) + if (ao_sleep(&ao_radio_wake)) + ao_radio_abort = 1; + ao_arch_release_interrupts(); + if (timeout) + ao_clear_alarm(); + if (ao_radio_mcu_wake) + ao_radio_check_marc_status(); +} + +static uint8_t +ao_radio_wait_tx(uint8_t wait_fifo) +{ + uint8_t fifo_space = 0; + + do { + ao_radio_wait_isr(0); + if (!wait_fifo) + return 0; + fifo_space = ao_radio_tx_fifo_space(); + } while (!fifo_space && !ao_radio_abort); + return fifo_space; +} + +static uint8_t tx_data[(AO_RADIO_MAX_SEND + 4) * 2]; + void -ao_radio_send(void *d, uint8_t size) +ao_radio_send(const void *d, uint8_t size) { - uint8_t marc_status; + uint8_t *e = tx_data; + uint8_t encode_len; + uint8_t this_len; + uint8_t started = 0; + uint8_t fifo_space; - ao_radio_get(size); - ao_radio_wake = 0; - ao_radio_fifo_write(d, size); - ao_exti_enable(&AO_CC1120_INT_PORT, AO_CC1120_INT_PIN); - ao_radio_strobe(CC1120_STX); - cli(); - for (;;) { - if (ao_radio_wake) { - marc_status = ao_radio_marc_status(); - if (marc_status != CC1120_MARC_STATUS1_NO_FAILURE) - break; - ao_radio_wake = 0; + encode_len = ao_fec_encode(d, size, tx_data); + + ao_radio_get(encode_len); + + ao_radio_abort = 0; + + /* Flush any pending TX bytes */ + ao_radio_strobe(CC1120_SFTX); + + started = 0; + fifo_space = CC1120_FIFO_SIZE; + while (encode_len) { + this_len = encode_len; + + ao_radio_wake = 0; + if (this_len > fifo_space) { + this_len = fifo_space; + ao_radio_set_mode(AO_RADIO_MODE_PACKET_TX_BUF); + } else { + ao_radio_set_mode(AO_RADIO_MODE_PACKET_TX_FINISH); + } + + ao_radio_fifo_write(e, this_len); + e += this_len; + encode_len -= this_len; + + if (!started) { + ao_radio_start_tx(); + started = 1; + } else { + ao_exti_enable(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN); + } + + fifo_space = ao_radio_wait_tx(encode_len != 0); + if (ao_radio_abort) { + ao_radio_idle(); + break; } - ao_sleep(&ao_radio_wake); } - sei(); + while (started && !ao_radio_abort && !ao_radio_tx_finished) + ao_radio_wait_isr(0); ao_radio_put(); } -uint8_t -ao_radio_recv(__xdata void *d, uint8_t size) +#define AO_RADIO_LOTS 64 + +void +ao_radio_send_aprs(ao_radio_fill_func fill) { - uint8_t marc_status = CC1120_MARC_STATUS1_NO_FAILURE; + uint8_t buf[AO_RADIO_LOTS], *b; + int cnt; + int total = 0; + uint8_t done = 0; + uint8_t started = 0; + uint8_t fifo_space; - /* configure interrupt pin */ - ao_radio_get(size); - ao_radio_wake = 0; - ao_exti_enable(&AO_CC1120_INT_PORT, AO_CC1120_INT_PIN); - ao_radio_strobe(CC1120_SRX); - cli(); - for (;;) { - if (ao_radio_abort) - break; - if (ao_radio_wake) { - marc_status = ao_radio_marc_status(); - if (marc_status != CC1120_MARC_STATUS1_NO_FAILURE) + ao_radio_get(0xff); + fifo_space = CC1120_FIFO_SIZE; + while (!done) { + cnt = (*fill)(buf, sizeof(buf)); + if (cnt < 0) { + done = 1; + cnt = -cnt; + } + total += cnt; + + /* At the last buffer, set the total length */ + if (done) + ao_radio_set_len(total & 0xff); + + b = buf; + while (cnt) { + uint8_t this_len = cnt; + + /* Wait for some space in the fifo */ + while (!ao_radio_abort && (fifo_space = ao_radio_tx_fifo_space()) == 0) { + ao_radio_wake = 0; + ao_radio_wait_isr(0); + } + if (ao_radio_abort) break; - ao_radio_wake = 0; + if (this_len > fifo_space) + this_len = fifo_space; + + cnt -= this_len; + + if (done) { + if (cnt) + ao_radio_set_mode(AO_RADIO_MODE_APRS_LAST_BUF); + else + ao_radio_set_mode(AO_RADIO_MODE_APRS_FINISH); + } else + ao_radio_set_mode(AO_RADIO_MODE_APRS_BUF); + + ao_radio_fifo_write(b, this_len); + b += this_len; + + if (!started) { + ao_radio_start_tx(); + started = 1; + } else + ao_exti_enable(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN); } - ao_sleep(&ao_radio_wake); + if (ao_radio_abort) { + ao_radio_idle(); + break; + } + /* Wait for the transmitter to go idle */ + ao_radio_wake = 0; + ao_radio_wait_isr(0); } - sei(); - if (marc_status != CC1120_MARC_STATUS1_RX_FINISHED) - ao_radio_fifo_read(d, size); ao_radio_put(); - return marc_status == CC1120_MARC_STATUS1_RX_FINISHED; } -/* - * Packet deviation is 20.5kHz - * - * fdev = fosc >> 24 * (256 + dev_m) << dev_e - * - * 32e6Hz / (2 ** 24) * (256 + 80) * (2 ** 5) = 20508Hz - */ +static uint8_t rx_data[(AO_RADIO_MAX_RECV + 4) * 2 * 8]; +static uint16_t rx_data_count; +static uint16_t rx_data_consumed; +static uint16_t rx_data_cur; +static uint8_t rx_ignore; +static uint8_t rx_waiting; +static uint8_t rx_starting; +static uint8_t rx_task_id; +static uint32_t rx_fast_start; +static uint32_t rx_slow_start; +static uint32_t rx_missed; -#define PACKET_DEV_E 5 -#define PACKET_DEV_M 80 +#if AO_PROFILE +static uint32_t rx_start_tick, rx_packet_tick, rx_done_tick, rx_last_done_tick; -/* - * For our packet data, set the symbol rate to 38360 Baud - * - * (2**20 - DATARATE_M) * 2 ** DATARATE_E - * Rdata = -------------------------------------- * fosc - * 2 ** 39 - * - * DATARATE_M = 405002 - * DATARATE_E = 10 - * - * To make the tone last for 200ms, we need 2000 * .2 = 400 bits or 50 bytes - */ -#define PACKET_DRATE_E 10 -#define PACKET_DRATE_M 405002 +uint32_t ao_rx_start_tick, ao_rx_packet_tick, ao_rx_done_tick, ao_rx_last_done_tick; -static const uint16_t packet_setup[] = { - CC1120_DEVIATION_M, PACKET_DEV_M, - CC1120_MODCFG_DEV_E, ((CC1120_MODCFG_DEV_E_MODEM_MODE_NORMAL << CC1120_MODCFG_DEV_E_MODEM_MODE) | - (CC1120_MODCFG_DEV_E_MOD_FORMAT_2_GFSK << CC1120_MODCFG_DEV_E_MOD_FORMAT) | - (PACKET_DEV_E << CC1120_MODCFG_DEV_E_DEV_E)), - CC1120_DRATE2, ((PACKET_DRATE_E << CC1120_DRATE2_DATARATE_E) | - (((PACKET_DRATE_M >> 16) & CC1120_DRATE2_DATARATE_M_19_16_MASK) << CC1120_DRATE2_DATARATE_M_19_16)), - CC1120_DRATE1, ((PACKET_DRATE_M >> 8) & 0xff), - CC1120_DRATE0, ((PACKET_DRATE_M >> 0) & 0xff), - CC1120_PKT_CFG2, ((CC1120_PKT_CFG2_CCA_MODE_ALWAYS_CLEAR << CC1120_PKT_CFG2_CCA_MODE) | - (CC1120_PKT_CFG2_PKT_FORMAT_NORMAL << CC1120_PKT_CFG2_PKT_FORMAT)), - CC1120_PKT_CFG1, ((1 << CC1120_PKT_CFG1_WHITE_DATA) | - (CC1120_PKT_CFG1_ADDR_CHECK_CFG_NONE << CC1120_PKT_CFG1_ADDR_CHECK_CFG) | - (CC1120_PKT_CFG1_CRC_CFG_DISABLED << CC1120_PKT_CFG1_CRC_CFG) | - (1 << CC1120_PKT_CFG1_APPEND_STATUS)), -}; +#include +#endif -void -ao_radio_set_packet(void) +static void +ao_radio_rx_isr(void) { - int i; + uint8_t d; - for (i = 0; i < sizeof (rdf_setup) / sizeof (rdf_setup[0]); i += 2) - ao_radio_reg_write(packet_setup[i], packet_setup[i+1]); + if (rx_task_id) { + if (ao_radio_try_select(rx_task_id)) { + ++rx_fast_start; + rx_task_id = 0; + _ao_radio_burst_read_start(CC1120_SOFT_RX_DATA_OUT); + } else { + if (rx_ignore) + --rx_ignore; + else { + ao_radio_abort = 1; + rx_missed++; + } + return; + } + } + if (rx_starting) { + rx_starting = 0; + ao_wakeup(&ao_radio_wake); + } + d = AO_CC1120_SPI.dr; + AO_CC1120_SPI.dr = 0; + if (rx_ignore == 0) { + if (rx_data_cur < rx_data_count) + rx_data[rx_data_cur++] = d; + if (rx_data_cur >= rx_data_count) { + ao_spi_clr_cs(AO_CC1120_SPI_CS_PORT,(1 << AO_CC1120_SPI_CS_PIN)); + ao_exti_disable(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN); + } + if (rx_waiting && rx_data_cur - rx_data_consumed >= AO_FEC_DECODE_BLOCK) { +#if AO_PROFILE + if (!rx_packet_tick) + rx_packet_tick = ao_profile_tick(); + if (rx_data_cur < rx_data_count) + return; +#endif + rx_waiting = 0; + ao_wakeup(&ao_radio_wake); + } + } else { + --rx_ignore; + } } -void -ao_radio_idle(void) +static uint16_t +ao_radio_rx_wait(void) { - for (;;) { - uint8_t state = ao_radio_strobe(CC1120_SIDLE); - if ((state >> CC1120_STATUS_STATE) == CC1120_STATUS_STATE_IDLE) - break; + ao_alarm(AO_MS_TO_TICKS(100)); + ao_arch_block_interrupts(); + rx_waiting = 1; + while (rx_data_cur - rx_data_consumed < AO_FEC_DECODE_BLOCK && + !ao_radio_abort && + !ao_radio_mcu_wake) + { + if (ao_sleep(&ao_radio_wake)) + ao_radio_abort = 1; } - ao_radio_strobe(CC1120_SFTX); - ao_radio_strobe(CC1120_SFRX); + rx_waiting = 0; + ao_arch_release_interrupts(); + ao_clear_alarm(); + if (ao_radio_abort || ao_radio_mcu_wake) + return 0; + rx_data_consumed += AO_FEC_DECODE_BLOCK; +#if AO_PROFILE + return rx_data_cur - rx_data_consumed; +#endif + return AO_FEC_DECODE_BLOCK; } -static const uint16_t radio_setup[] = { -#include "ao_cc1120_CC1120.h" -}; +uint8_t +ao_radio_recv(__xdata void *d, uint8_t size, uint8_t timeout) +{ + uint8_t len; + uint8_t radio_rssi = 0; + uint8_t rssi0; + uint8_t ret; + + size -= 2; /* status bytes */ + if (size > AO_RADIO_MAX_RECV) { + ao_delay(AO_SEC_TO_TICKS(1)); + return 0; + } +#if AO_PROFILE + rx_start_tick = ao_profile_tick(); + rx_packet_tick = 0; +#endif + len = size + 2; /* CRC bytes */ + len += 1 + ~(len & 1); /* 1 or two pad bytes */ + len *= 2; /* 1/2 rate convolution */ + rx_data_count = len * 8; /* bytes to bits */ + rx_data_cur = 0; + rx_data_consumed = 0; + rx_ignore = 2; + + /* Must be set before changing the frequency; any abort + * after the frequency is set needs to terminate the read + * so that the registers can be reprogrammed + */ + ao_radio_abort = 0; -static uint8_t ao_radio_configured = 0; + ao_radio_get(len); -static void -ao_radio_isr(void) -{ - ao_exti_disable(&AO_CC1120_INT_PORT, AO_CC1120_INT_PIN); - ao_radio_wake = 1; - ao_wakeup(&ao_radio_wake); -} + ao_radio_wake = 0; + ao_radio_mcu_wake = 0; -static void -ao_radio_setup(void) -{ - int i; + ao_radio_set_mode(AO_RADIO_MODE_PACKET_RX); - ao_radio_strobe(CC1120_SRES); + /* configure interrupt pin */ + ao_radio_reg_write(AO_CC1120_INT_GPIO_IOCFG, CC1120_IOCFG_GPIO_CFG_CLKEN_SOFT); + ao_exti_set_mode(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, + AO_EXTI_MODE_FALLING|AO_EXTI_PRIORITY_HIGH); - for (i = 0; i < sizeof (radio_setup) / sizeof (radio_setup[0]); i += 2) - ao_radio_reg_write(radio_setup[i], radio_setup[i+1]); + ao_exti_set_callback(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, ao_radio_rx_isr); + ao_exti_enable(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN); - /* Enable marc status interrupt on gpio 2 pin */ - ao_radio_reg_write(CC1120_IOCFG2, CC1120_IOCFG_GPIO_CFG_MARC_MCU_WAKEUP); + rx_starting = 1; + rx_task_id = ao_cur_task->task_id; - /* Enable the EXTI interrupt for the appropriate pin */ - ao_enable_port(AO_CC1120_INT_PORT); - ao_exti_setup(&AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, AO_EXTI_MODE_FALLING, ao_radio_isr); + ao_radio_strobe(CC1120_SRX); - ao_radio_set_packet(); - ao_radio_configured = 1; -} + if (timeout) + ao_alarm(timeout); + ao_arch_block_interrupts(); + while (rx_starting && !ao_radio_abort) { + if (ao_sleep(&ao_radio_wake)) + ao_radio_abort = 1; + } + uint8_t rx_task_id_save = rx_task_id; + rx_task_id = 0; + rx_starting = 0; + ao_arch_release_interrupts(); + if (timeout) + ao_clear_alarm(); + + if (ao_radio_abort) { + ret = 0; + rx_task_id = 0; + goto abort; + } -void -ao_radio_get(uint8_t len) -{ - ao_mutex_get(&ao_radio_mutex); - if (!ao_radio_configured) - ao_radio_setup(); - ao_radio_reg_write(CC1120_FREQ2, ao_config.radio_setting >> 16); - ao_radio_reg_write(CC1120_FREQ1, ao_config.radio_setting >> 8); - ao_radio_reg_write(CC1120_FREQ0, ao_config.radio_setting); - ao_radio_reg_write(CC1120_PKT_LEN, len); + if (rx_task_id_save) { + ++rx_slow_start; + ao_radio_select(); + _ao_radio_burst_read_start(CC1120_SOFT_RX_DATA_OUT); + if (rx_ignore) { + uint8_t ignore = AO_CC1120_SPI.dr; + (void) ignore; + AO_CC1120_SPI.dr = 0; + --rx_ignore; + } + } + + ret = ao_fec_decode(rx_data, rx_data_count, d, size + 2, ao_radio_rx_wait); + + ao_radio_burst_read_stop(); + + if (ao_radio_mcu_wake) + ao_radio_check_marc_status(); + if (ao_radio_abort) + ret = 0; + +abort: + /* Convert from 'real' rssi to cc1111-style values */ + + rssi0 = ao_radio_reg_read(CC1120_RSSI0); + if (rssi0 & 1) { + int8_t rssi = ao_radio_reg_read(CC1120_RSSI1); + ao_radio_rssi = rssi; + + /* Bound it to the representable range */ + if (rssi > -11) + rssi = -11; + radio_rssi = AO_RADIO_FROM_RSSI (rssi); + } + + ao_radio_idle(); + + ao_radio_put(); + + /* Store the received RSSI value; the crc-OK byte is already done */ + + ((uint8_t *) d)[size] = radio_rssi; + +#if AO_PROFILE + rx_last_done_tick = rx_done_tick; + rx_done_tick = ao_profile_tick(); + + ao_rx_start_tick = rx_start_tick; + ao_rx_packet_tick = rx_packet_tick; + ao_rx_done_tick = rx_done_tick; + ao_rx_last_done_tick = rx_last_done_tick; +#endif + + return ret; } + #if CC1120_DEBUG static char *cc1120_state_name[] = { [CC1120_STATUS_STATE_IDLE] = "IDLE", @@ -520,7 +1227,7 @@ struct ao_cc1120_reg { char *name; }; -const static struct ao_cc1120_reg ao_cc1120_reg[] = { +static const struct ao_cc1120_reg ao_cc1120_reg[] = { { .addr = CC1120_IOCFG3, .name = "IOCFG3" }, { .addr = CC1120_IOCFG2, .name = "IOCFG2" }, { .addr = CC1120_IOCFG1, .name = "IOCFG1" }, @@ -701,31 +1408,83 @@ const static struct ao_cc1120_reg ao_cc1120_reg[] = { static void ao_radio_show(void) { uint8_t status = ao_radio_status(); - int i; + unsigned int i; ao_radio_get(0xff); status = ao_radio_status(); printf ("Status: %02x\n", status); printf ("CHIP_RDY: %d\n", (status >> CC1120_STATUS_CHIP_RDY) & 1); printf ("STATE: %s\n", cc1120_state_name[(status >> CC1120_STATUS_STATE) & CC1120_STATUS_STATE_MASK]); - printf ("MARC: %02x\n", ao_radio_marc_status()); + printf ("MARC: %02x\n", ao_radio_get_marc_status()); for (i = 0; i < AO_NUM_CC1120_REG; i++) printf ("\t%02x %-20.20s\n", ao_radio_reg_read(ao_cc1120_reg[i].addr), ao_cc1120_reg[i].name); + + printf("RX fast start: %u\n", rx_fast_start); + printf("RX slow start: %u\n", rx_slow_start); + printf("RX missed: %u\n", rx_missed); ao_radio_put(); } static void ao_radio_beep(void) { - ao_radio_rdf(120); + ao_radio_rdf(); } +static void ao_radio_packet(void) { + static const uint8_t packet[] = { +#if 1 + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, + 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, +#else + 3, 1, 2, 3 +#endif + }; + + ao_radio_send(packet, sizeof (packet)); +} + +void +ao_radio_test_recv(void) +{ + uint8_t bytes[34]; + uint8_t b; + + if (ao_radio_recv(bytes, 34, 0)) { + if (bytes[33] & 0x80) + printf ("CRC OK"); + else + printf ("CRC BAD"); + printf (" RSSI %d", AO_RSSI_FROM_RADIO(bytes[32])); + for (b = 0; b < 32; b++) + printf (" %02x", bytes[b]); + printf ("\n"); + } +} + +#if HAS_APRS +#include + +static void +ao_radio_aprs(void) +{ + ao_packet_slave_stop(); + ao_aprs_send(); +} +#endif #endif static const struct ao_cmds ao_radio_cmds[] = { - { ao_radio_test, "C <1 start, 0 stop, none both>\0Radio carrier test" }, + { ao_radio_test_cmd, "C <1 start, 0 stop, none both>\0Radio carrier test" }, #if CC1120_DEBUG +#if HAS_APRS + { ao_radio_aprs, "G\0Send APRS packet" }, +#endif { ao_radio_show, "R\0Show CC1120 status" }, - { ao_radio_beep, "B\0Emit an RDF beacon" }, + { ao_radio_beep, "b\0Emit an RDF beacon" }, + { ao_radio_packet, "p\0Send a test packet" }, + { ao_radio_test_recv, "q\0Recv a test packet" }, #endif { 0, NULL } }; @@ -736,5 +1495,28 @@ ao_radio_init(void) ao_radio_configured = 0; ao_spi_init_cs (AO_CC1120_SPI_CS_PORT, (1 << AO_CC1120_SPI_CS_PIN)); +#if 0 + AO_CC1120_SPI_CS_PORT->bsrr = ((uint32_t) (1 << AO_CC1120_SPI_CS_PIN)); + for (i = 0; i < 10000; i++) { + if ((SPI_2_PORT->idr & (1 << SPI_2_MISO_PIN)) == 0) + break; + } + AO_CC1120_SPI_CS_PORT->bsrr = (1 << AO_CC1120_SPI_CS_PIN); + if (i == 10000) + ao_panic(AO_PANIC_SELF_TEST_CC1120); +#endif + + /* Enable the EXTI interrupt for the appropriate pin */ + ao_enable_port(AO_CC1120_INT_PORT); + ao_exti_setup(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, + AO_EXTI_MODE_FALLING|AO_EXTI_PRIORITY_HIGH, + ao_radio_isr); + + /* Enable the hacked up GPIO3 pin */ + ao_enable_port(AO_CC1120_MCU_WAKEUP_PORT); + ao_exti_setup(AO_CC1120_MCU_WAKEUP_PORT, AO_CC1120_MCU_WAKEUP_PIN, + AO_EXTI_MODE_FALLING|AO_EXTI_PRIORITY_MED, + ao_radio_mcu_wakeup_isr); + ao_cmd_register(&ao_radio_cmds[0]); }