*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
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
#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,AO_SPI_SPEED_1MHz)
+#define AO_CC1120_SPI_SPEED ao_spi_speed(AO_CC1120_SPI_BUS, 6100000) /* 6.1MHz max with 32MHz osc */
+
+#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_CC1120_SPI_SPEED, 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_CC1120_SPI_SPEED)
#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_start_bytes() ao_spi_start_bytes(AO_CC1120_SPI_BUS)
+#define ao_radio_spi_stop_bytes() ao_spi_stop_bytes(AO_CC1120_SPI_BUS)
+#define ao_radio_spi_send_byte(b) ao_spi_send_byte(b, AO_CC1120_SPI_BUS)
+#define ao_radio_spi_recv_byte() ao_spi_recv_byte(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)
data[0] = ((1 << CC1120_READ) |
(0 << CC1120_BURST) |
CC1120_EXTENDED);
- data[1] = addr;
+ data[1] = (uint8_t) addr;
d = 2;
} else {
data[0] = ((1 << CC1120_READ) |
(0 << CC1120_BURST) |
- addr);
+ (uint8_t) addr);
d = 1;
}
ao_radio_select();
data[0] = ((0 << CC1120_READ) |
(0 << CC1120_BURST) |
CC1120_EXTENDED);
- data[1] = addr;
+ data[1] = (uint8_t) addr;
d = 2;
} else {
data[0] = ((0 << CC1120_READ) |
(0 << CC1120_BURST) |
- addr);
+ (uint8_t) addr);
d = 1;
}
data[d] = value;
}
static void
-ao_radio_burst_read_start (uint16_t addr)
+_ao_radio_burst_read_start (uint16_t addr)
{
- uint8_t data[2];
- uint8_t d;
+ ao_radio_spi_start_bytes();
if (CC1120_IS_EXTENDED(addr)) {
- data[0] = ((1 << CC1120_READ) |
- (1 << CC1120_BURST) |
- CC1120_EXTENDED);
- data[1] = addr;
- d = 2;
+ ao_radio_spi_send_byte((1 << CC1120_READ) |
+ (1 << CC1120_BURST) |
+ CC1120_EXTENDED);
} else {
- data[0] = ((1 << CC1120_READ) |
- (1 << CC1120_BURST) |
- addr);
- d = 1;
+ addr |= ((1 << CC1120_READ) |
+ (1 << CC1120_BURST));
}
- ao_radio_select();
- ao_radio_spi_send(data, d);
+ ao_radio_spi_send_byte((uint8_t) addr);
}
static void
ao_radio_burst_read_stop (void)
{
+ ao_radio_spi_stop_bytes();
ao_radio_deselect();
}
return in;
}
+#if 0
static uint8_t
ao_radio_fifo_read(uint8_t *data, uint8_t len)
{
ao_radio_deselect();
return status;
}
+#endif
static uint8_t
ao_radio_fifo_write_start(void)
return status;
}
-static inline uint8_t ao_radio_fifo_write_stop(uint8_t status) {
+static inline void ao_radio_fifo_write_stop(void) {
ao_radio_deselect();
- return status;
}
static uint8_t
{
uint8_t status = ao_radio_fifo_write_start();
ao_radio_spi_send(data, len);
- return ao_radio_fifo_write_stop(status);
+ ao_radio_fifo_write_stop();
+ return status;
}
static uint8_t
{
uint8_t status = ao_radio_fifo_write_start();
ao_radio_spi_send_fixed(data, len);
- return ao_radio_fifo_write_stop(status);
+ ao_radio_fifo_write_stop();
+ return status;
}
static uint8_t
-ao_radio_tx_fifo_space(void)
+ao_radio_int_pin(void)
{
- return CC1120_FIFO_SIZE - ao_radio_reg_read(CC1120_NUM_TXBYTES);
+ return ao_gpio_get(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN);
}
+#if CC1120_DEBUG
static uint8_t
ao_radio_status(void)
{
return ao_radio_strobe (CC1120_SNOP);
}
+#endif
void
ao_radio_recv_abort(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
}
static void
-ao_radio_start_tx(void)
+ao_radio_enable_isr(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);
+}
+
+static void
+ao_radio_start_tx(void)
+{
+ ao_exti_set_callback(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, ao_radio_isr);
+ ao_radio_tx_finished = 0;
ao_radio_strobe(CC1120_STX);
}
ao_radio_idle(void)
{
for (;;) {
- uint8_t state = ao_radio_strobe(CC1120_SIDLE);
- if ((state >> CC1120_STATUS_STATE) == CC1120_STATUS_STATE_IDLE)
+ 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 is 20.5kHz
+ * 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_E 5
-#define PACKET_DEV_M 80
+#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, set the symbol rate to 38400 Baud
+ * 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_E 9
+
#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_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) |
(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,
+};
+
+#define AO_CC1120_TX_BUFFER 64
+
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,
+ CC1120_FIFO_CFG, ((0 << CC1120_FIFO_CFG_CRC_AUTOFLUSH) |
+ (AO_CC1120_TX_BUFFER << CC1120_FIFO_CFG_FIFO_THR)),
};
static const uint16_t packet_rx_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,
};
/*
- * APRS deviation is 5kHz
+ * APRS deviation is 3kHz
*
* fdev = fosc >> 24 * (256 + dev_m) << dev_e
*
- * 32e6Hz / (2 ** 24) * (256 + 71) * (2 ** 3) = 4989
+ * 32e6Hz / (2 ** 24) * (256 + 137) * (2 ** 2) = 2998Hz
*/
-#define APRS_DEV_E 3
-#define APRS_DEV_M 71
-#define APRS_PACKET_LEN 50
+#define APRS_DEV_E 2
+#define APRS_DEV_M 137
/*
* For our APRS beacon, set the symbol rate to 9.6kBaud (8x oversampling for 1200 baud data rate)
(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,
+ CC1120_FIFO_CFG, ((0 << CC1120_FIFO_CFG_CRC_AUTOFLUSH) |
+ (AO_CC1120_TX_BUFFER << CC1120_FIFO_CFG_FIFO_THR)),
+};
+
+/*
+ * 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) | \
#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_INFINITE 128
-#define AO_RADIO_MODE_BITS_FIXED 256
+#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_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)
+{
+ int i;
+
+ for (i = 0; i < nreg; i++) {
+ ao_radio_reg_write(regs[0], (uint8_t) regs[1]);
+ regs += 2;
+ }
+}
+
+#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;
- int i;
if (new_mode == ao_radio_mode)
return;
- changes = new_mode & (~ao_radio_mode);
- if (changes & AO_RADIO_MODE_BITS_PACKET)
- for (i = 0; i < sizeof (packet_setup) / sizeof (packet_setup[0]); i += 2)
- ao_radio_reg_write(packet_setup[i], packet_setup[i+1]);
+ changes = (uint16_t) (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)
- for (i = 0; i < sizeof (packet_tx_setup) / sizeof (packet_tx_setup[0]); i += 2)
- ao_radio_reg_write(packet_tx_setup[i], packet_tx_setup[i+1]);
-
+ 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);
ao_radio_reg_write(AO_CC1120_INT_GPIO_IOCFG, CC1120_IOCFG_GPIO_CFG_RX0TX1_CFG);
if (changes & AO_RADIO_MODE_BITS_PACKET_RX)
- for (i = 0; i < sizeof (packet_rx_setup) / sizeof (packet_rx_setup[0]); i += 2)
- ao_radio_reg_write(packet_rx_setup[i], packet_rx_setup[i+1]);
-
+ ao_radio_set_regs(packet_rx_setup);
+
if (changes & AO_RADIO_MODE_BITS_RDF)
- 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_set_regs(rdf_setup);
if (changes & AO_RADIO_MODE_BITS_APRS)
- for (i = 0; i < sizeof (aprs_setup) / sizeof (aprs_setup[0]); i += 2)
- ao_radio_reg_write(aprs_setup[i], aprs_setup[i+1]);
+ 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);
static void
ao_radio_setup(void)
{
- int i;
-
ao_radio_strobe(CC1120_SRES);
- 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_radio_set_regs(radio_setup);
ao_radio_mode = 0;
ao_radio_get(uint8_t len)
{
static uint32_t last_radio_setting;
+ static uint8_t last_radio_rate;
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);
+ ao_radio_reg_write(CC1120_FREQ2, (uint8_t) (ao_config.radio_setting >> 16));
+ ao_radio_reg_write(CC1120_FREQ1, (uint8_t) (ao_config.radio_setting >> 8));
+ ao_radio_reg_write(CC1120_FREQ0, (uint8_t) (ao_config.radio_setting));
last_radio_setting = ao_config.radio_setting;
}
+ if (ao_config.radio_rate != last_radio_rate) {
+ ao_radio_mode &= (uint16_t) ~AO_RADIO_MODE_BITS_PACKET;
+ last_radio_rate = ao_config.radio_rate;
+ }
ao_radio_set_len(len);
}
ao_radio_start_tx();
ao_arch_block_interrupts();
- while (!ao_radio_wake && !ao_radio_abort && !ao_radio_mcu_wake)
+ while (!ao_radio_wake && !ao_radio_abort && !ao_radio_mcu_wake) {
+ ao_radio_enable_isr();
ao_sleep(&ao_radio_wake);
+ }
ao_arch_release_interrupts();
if (ao_radio_mcu_wake)
ao_radio_check_marc_status();
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();
+ (void) 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(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_radio_fifo_write_stop();
ao_rdf_run();
}
static uint8_t radio_on;
ao_cmd_white();
if (ao_cmd_lex_c != '\n') {
- ao_cmd_decimal();
- mode = (uint8_t) ao_cmd_lex_u32;
+ mode = (uint8_t) ao_cmd_decimal();
}
mode++;
if ((mode & 2) && !radio_on) {
ao_packet_slave_stop();
#endif
ao_radio_get(0xff);
+ ao_radio_set_mode(AO_RADIO_MODE_TEST);
ao_radio_strobe(CC1120_STX);
#if CC1120_TRACE
- { int t;
+ { int t;
for (t = 0; t < 10; t++) {
printf ("status: %02x\n", ao_radio_status());
ao_delay(AO_MS_TO_TICKS(100));
}
static void
-ao_radio_wait_isr(void)
+ao_radio_wait_isr(AO_TICK_TYPE timeout)
{
ao_arch_block_interrupts();
while (!ao_radio_wake && !ao_radio_mcu_wake && !ao_radio_abort)
- ao_sleep(&ao_radio_wake);
+ if (ao_sleep_for(&ao_radio_wake, timeout))
+ ao_radio_abort = 1;
ao_arch_release_interrupts();
if (ao_radio_mcu_wake)
ao_radio_check_marc_status();
}
-static uint8_t
-ao_radio_wait_tx(uint8_t wait_fifo)
+static void
+ao_radio_wait_fifo(void)
{
- uint8_t fifo_space = 0;
-
- do {
- ao_radio_wait_isr();
- if (!wait_fifo)
- return 0;
- fifo_space = ao_radio_tx_fifo_space();
- } while (!fifo_space && !ao_radio_abort);
- return fifo_space;
+ while (ao_radio_int_pin() != 0 && !ao_radio_abort) {
+ ao_radio_wake = 0;
+ ao_radio_enable_isr();
+ ao_radio_wait_isr(0);
+ }
}
static uint8_t tx_data[(AO_RADIO_MAX_SEND + 4) * 2];
void
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;
encode_len = ao_fec_encode(d, size, tx_data);
ao_radio_get(encode_len);
- started = 0;
- fifo_space = CC1120_FIFO_SIZE;
+ ao_radio_abort = 0;
+
+ /* Flush any pending TX bytes */
+ ao_radio_strobe(CC1120_SFTX);
+
while (encode_len) {
this_len = encode_len;
- ao_radio_wake = 0;
- if (this_len > fifo_space) {
- this_len = fifo_space;
+ if (started) {
+ ao_radio_wait_fifo();
+ if (ao_radio_abort)
+ break;
+ }
+
+ if (this_len > AO_CC1120_TX_BUFFER) {
+ this_len = AO_CC1120_TX_BUFFER;
ao_radio_set_mode(AO_RADIO_MODE_PACKET_TX_BUF);
} else {
ao_radio_set_mode(AO_RADIO_MODE_PACKET_TX_FINISH);
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;
}
}
+ while (started && !ao_radio_abort && !ao_radio_tx_finished) {
+ ao_radio_wake = 0;
+ ao_radio_enable_isr();
+ ao_radio_wait_isr(0);
+ }
+ if (ao_radio_abort)
+ ao_radio_idle();
ao_radio_put();
}
-#define AO_RADIO_LOTS 64
-
void
-ao_radio_send_lots(ao_radio_fill_func fill)
+ao_radio_send_aprs(ao_radio_fill_func fill)
{
- uint8_t buf[AO_RADIO_LOTS], *b;
+ uint8_t buf[AO_CC1120_TX_BUFFER];
int cnt;
int total = 0;
uint8_t done = 0;
uint8_t started = 0;
- uint8_t fifo_space;
ao_radio_get(0xff);
- fifo_space = CC1120_FIFO_SIZE;
+
+ ao_radio_abort = 0;
+
+ ao_exti_set_callback(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, ao_radio_isr);
while (!done) {
cnt = (*fill)(buf, sizeof(buf));
if (cnt < 0) {
}
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();
- }
+ /* Wait for some space in the fifo */
+ if (started) {
+ ao_radio_wait_fifo();
if (ao_radio_abort)
break;
- 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);
}
- if (ao_radio_abort) {
- ao_radio_idle();
- break;
+
+ if (done) {
+ ao_radio_set_len((uint8_t) (total & 0xff));
+ ao_radio_set_mode(AO_RADIO_MODE_APRS_FINISH);
+ } else
+ ao_radio_set_mode(AO_RADIO_MODE_APRS_BUF);
+
+ ao_radio_fifo_write(buf, (uint8_t) cnt);
+
+ if (!started) {
+ ao_radio_start_tx();
+ started = 1;
}
- /* Wait for the transmitter to go idle */
+ }
+ /* Wait for the transmitter to go idle */
+ while (started && ao_radio_int_pin() != 0 && !ao_radio_abort) {
ao_radio_wake = 0;
- ao_radio_wait_isr();
+ ao_radio_enable_isr();
+ ao_radio_wait_isr(0);
}
+ if (ao_radio_abort)
+ ao_radio_idle();
ao_radio_put();
}
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;
#if AO_PROFILE
static uint32_t rx_start_tick, rx_packet_tick, rx_done_tick, rx_last_done_tick;
{
uint8_t d;
- d = AO_CC1120_SPI.dr;
- AO_CC1120_SPI.dr = 0;
+ if (ao_radio_abort)
+ return;
+ 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_radio_spi_recv_byte();
if (rx_ignore == 0) {
- if (rx_data_cur >= rx_data_count)
- ao_exti_disable(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN);
- else
+ 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)
static uint16_t
ao_radio_rx_wait(void)
{
- do {
- if (ao_radio_mcu_wake)
- ao_radio_check_marc_status();
- 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;
- }
- rx_waiting = 0;
- ao_arch_release_interrupts();
- } while (ao_radio_mcu_wake);
- if (ao_radio_abort)
+ 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_for(&ao_radio_wake, AO_MS_TO_TICKS(100)))
+ ao_radio_abort = 1;
+ }
+ rx_waiting = 0;
+ ao_arch_release_interrupts();
+ if (ao_radio_abort || ao_radio_mcu_wake)
return 0;
rx_data_consumed += AO_FEC_DECODE_BLOCK;
#if AO_PROFILE
}
uint8_t
-ao_radio_recv(__xdata void *d, uint8_t size)
+ao_radio_recv(void *d, uint8_t size, AO_TICK_TYPE timeout)
{
uint8_t len;
- uint16_t i;
- uint8_t rssi;
+ uint8_t radio_rssi = 0;
+ uint8_t rssi0;
uint8_t ret;
- static int been_here = 0;
size -= 2; /* status bytes */
if (size > AO_RADIO_MAX_RECV) {
rx_packet_tick = 0;
#endif
len = size + 2; /* CRC bytes */
- len += 1 + ~(len & 1); /* 1 or two pad bytes */
+ len += (uint8_t) (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;
+ rx_ignore = 1;
/* Must be set before changing the frequency; any abort
* after the frequency is set needs to terminate the read
*/
ao_radio_abort = 0;
- /* configure interrupt pin */
ao_radio_get(len);
- ao_radio_set_mode(AO_RADIO_MODE_PACKET_RX);
ao_radio_wake = 0;
ao_radio_mcu_wake = 0;
- AO_CC1120_SPI.cr2 = 0;
-
- /* clear any RXNE */
- (void) AO_CC1120_SPI.dr;
-
- /* Have the radio signal when the preamble quality goes high */
- ao_radio_reg_write(AO_CC1120_INT_GPIO_IOCFG, CC1120_IOCFG_GPIO_CFG_PQT_REACHED);
- ao_exti_set_mode(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN,
- AO_EXTI_MODE_RISING|AO_EXTI_PRIORITY_HIGH);
- 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_strobe(CC1120_SRX);
-
- /* Wait for the preamble to appear */
- ao_radio_wait_isr();
- if (ao_radio_abort)
- goto abort;
+ ao_radio_set_mode(AO_RADIO_MODE_PACKET_RX);
+ /* 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);
+ rx_starting = 1;
+ rx_task_id = ao_cur_task->task_id;
+
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);
- ao_radio_burst_read_start(CC1120_SOFT_RX_DATA_OUT);
+ ao_radio_strobe(CC1120_SRX);
+
+ ao_arch_block_interrupts();
+ while (rx_starting && !ao_radio_abort) {
+ if (ao_sleep_for(&ao_radio_wake, timeout))
+ 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 (ao_radio_abort) {
+ if (rx_task_id_save == 0)
+ ao_radio_burst_read_stop();
+ ret = 0;
+ goto abort;
+ }
+
+ if (rx_task_id_save) {
+ ++rx_slow_start;
+ ao_radio_select();
+ _ao_radio_burst_read_start(CC1120_SOFT_RX_DATA_OUT);
+ if (rx_ignore) {
+ (void) ao_radio_spi_recv_byte();
+ --rx_ignore;
+ }
+ }
ret = ao_fec_decode(rx_data, rx_data_count, d, size + 2, ao_radio_rx_wait);
ao_radio_burst_read_stop();
-abort:
- ao_radio_strobe(CC1120_SIDLE);
+ 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 */
- rssi = AO_RADIO_FROM_RSSI(ao_radio_reg_read(CC1120_RSSI1));
+ rssi0 = ao_radio_reg_read(CC1120_RSSI0);
+ if (rssi0 & 1) {
+ int8_t rssi = (int8_t) 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] = (uint8_t) rssi;
+ ((uint8_t *) d)[size] = radio_rssi;
#if AO_PROFILE
rx_last_done_tick = rx_done_tick;
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" },
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();
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();
}
}
void
-ao_radio_test_recv()
+ao_radio_test_recv(void)
{
uint8_t bytes[34];
uint8_t b;
- if (ao_radio_recv(bytes, 34)) {
+ if (ao_radio_recv(bytes, 34, 0)) {
if (bytes[33] & 0x80)
printf ("CRC OK");
else
#include <ao_aprs.h>
static void
-ao_radio_aprs()
+ao_radio_aprs(void)
{
+#if PACKET_HAS_SLAVE
ao_packet_slave_stop();
+#endif
ao_aprs_send();
}
#endif
-
#endif
static const struct ao_cmds ao_radio_cmds[] = {
void
ao_radio_init(void)
{
- int i;
-
ao_radio_configured = 0;
ao_spi_init_cs (AO_CC1120_SPI_CS_PORT, (1 << AO_CC1120_SPI_CS_PIN));