#include <ao_fec.h>
#include <ao_packet.h>
+#define AO_RADIO_MAX_RECV sizeof(struct ao_packet)
+#define AO_RADIO_MAX_SEND sizeof(struct ao_packet)
+
uint8_t ao_radio_wake;
uint8_t ao_radio_mutex;
uint8_t ao_radio_abort;
#define CC1120_DEBUG AO_FEC_DEBUG
#define CC1120_TRACE 0
-#if CC1120_TRACE
-#define fec_dump_bytes(b,l,n) ao_fec_dump_bytes(b,l,n)
-#else
-#define fec_dump_bytes(b,l,n)
-#endif
-
-const uint32_t ao_radio_cal = 0x6ca333;
+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_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_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(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)
}
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) |
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);
+}
- 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();
- return status;
+ return ao_radio_fifo_write_stop(status);
}
static uint8_t
/*
* 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
*/
(0 << CC1120_PKT_CFG0_UART_SWAP_EN)),
};
-static uint8_t ao_radio_mode;
+/*
+ * APRS deviation is 5kHz
+ *
+ * fdev = fosc >> 24 * (256 + dev_m) << dev_e
+ *
+ * 32e6Hz / (2 ** 24) * (256 + 71) * (2 ** 3) = 4989
+ */
+
+#define APRS_DEV_E 3
+#define APRS_DEV_M 71
+#define APRS_PACKET_LEN 50
+
+/*
+ * 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 5
+#define APRS_DRATE_M 25166
+
+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)),
+};
+
+#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_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_INFINITE 128
+#define AO_RADIO_MODE_BITS_FIXED 256
#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)
+#define AO_RADIO_MODE_APRS_FINISH (AO_RADIO_MODE_BITS_APRS | AO_RADIO_MODE_BITS_FIXED)
static void
-ao_radio_set_mode(uint8_t new_mode)
+ao_radio_set_mode(uint16_t new_mode)
{
- uint8_t changes;
+ uint16_t changes;
int i;
if (new_mode == ao_radio_mode)
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]);
+
+ 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]);
+
+ 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;
}
ao_radio_configured = 1;
}
+static void
+ao_radio_set_len(uint8_t len)
+{
+ static uint8_t last_len;
+
+ if (len != last_len) {
+ ao_radio_reg_write(CC1120_PKT_LEN, len);
+ last_len = len;
+ }
+}
+
static void
ao_radio_get(uint8_t len)
{
static uint32_t last_radio_setting;
- static uint8_t last_len;
ao_mutex_get(&ao_radio_mutex);
if (!ao_radio_configured)
ao_radio_reg_write(CC1120_FREQ0, ao_config.radio_setting);
last_radio_setting = ao_config.radio_setting;
}
- if (len != last_len) {
- ao_radio_reg_write(CC1120_PKT_LEN, len);
- last_len = len;
- }
+ ao_radio_set_len(len);
}
#define ao_radio_put() ao_mutex_put(&ao_radio_mutex)
-void
-ao_radio_rdf(uint8_t len)
+static void
+ao_rdf_start(uint8_t len)
{
- int i;
-
ao_radio_abort = 0;
ao_radio_get(len);
ao_radio_set_mode(AO_RADIO_MODE_RDF);
ao_radio_wake = 0;
- ao_radio_fifo_write_fixed(ao_radio_rdf_value, len);
+}
+static void
+ao_rdf_run(void)
+{
ao_radio_start_tx();
- cli();
+ ao_arch_block_interrupts();
while (!ao_radio_wake && !ao_radio_abort)
ao_sleep(&ao_radio_wake);
- sei();
+ ao_arch_release_interrupts();
if (!ao_radio_wake)
ao_radio_idle();
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)
{
}
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();
}
}
+static uint8_t
+ao_radio_wait_tx(uint8_t wait_fifo)
+{
+ uint8_t fifo_space = 0;
+
+ do {
+ ao_radio_wake = 0;
+ ao_arch_block_interrupts();
+ while (!ao_radio_wake)
+ ao_sleep(&ao_radio_wake);
+ ao_arch_release_interrupts();
+ if (!wait_fifo)
+ return 0;
+ fifo_space = ao_radio_tx_fifo_space();
+ } while (!fifo_space);
+ return fifo_space;
+}
+
+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;
- static uint8_t encode[256];
- uint8_t *e = encode;
+ 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, encode);
+ encode_len = ao_fec_encode(d, size, tx_data);
ao_radio_get(encode_len);
ao_exti_enable(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN);
}
- do {
- ao_radio_wake = 0;
- cli();
- while (!ao_radio_wake)
- ao_sleep(&ao_radio_wake);
- sei();
- if (!encode_len)
- break;
- fifo_space = ao_radio_tx_fifo_space();
- } while (!fifo_space);
+ fifo_space = ao_radio_wait_tx(encode_len != 0);
}
ao_radio_put();
}
-#define AO_RADIO_MAX_RECV 90
+#define AO_RADIO_LOTS 64
-uint8_t rx_data[(AO_RADIO_MAX_RECV + 4) * 2 * 8];
-uint16_t rx_data_count;
-uint16_t rx_data_consumed;
-uint16_t rx_data_cur;
-uint8_t rx_ignore;
-uint8_t rx_waiting;
+void
+ao_radio_send_lots(ao_radio_fill_func fill)
+{
+ uint8_t buf[AO_RADIO_LOTS], *b;
+ 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;
+ while (!done) {
+ cnt = (*fill)(buf, sizeof(buf));
+ if (cnt < 0) {
+ done = 1;
+ cnt = -cnt;
+ }
+ total += cnt;
+ if (done) {
+ ao_radio_set_len(total & 0xff);
+ ao_radio_set_mode(AO_RADIO_MODE_APRS_FINISH);
+ } else
+ ao_radio_set_mode(AO_RADIO_MODE_APRS_BUF);
+ b = buf;
+ while (cnt) {
+ uint8_t this_len = cnt;
+ if (this_len > fifo_space)
+ this_len = fifo_space;
+ ao_radio_fifo_write(b, this_len);
+ b += this_len;
+ cnt -= this_len;
+ if (!started) {
+ ao_radio_start_tx();
+ started = 1;
+ }
+ fifo_space = ao_radio_wait_tx(!done || cnt);
+ }
+ }
+ ao_radio_put();
+}
+
+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;
#if AO_PROFILE
static uint32_t rx_start_tick, rx_packet_tick, rx_done_tick, rx_last_done_tick;
rx_data[rx_data_cur++] = d;
if (rx_waiting && rx_data_cur - rx_data_consumed >= AO_FEC_DECODE_BLOCK) {
#if AO_PROFILE
- if (rx_data_consumed == 0)
+ 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);
static uint16_t
ao_radio_rx_wait(void)
{
- cli();
+ ao_arch_block_interrupts();
rx_waiting = 1;
while (rx_data_cur - rx_data_consumed < AO_FEC_DECODE_BLOCK &&
!ao_radio_abort) {
ao_sleep(&ao_radio_wake);
}
rx_waiting = 0;
- sei();
+ ao_arch_release_interrupts();
if (ao_radio_abort)
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;
}
}
#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 */
/* Convert from 'real' rssi to cc1111-style values */
- rssi = (((int8_t) ao_radio_reg_read(CC1120_RSSI1)) + 74) * 2;
+ rssi = AO_RADIO_FROM_RSSI(ao_radio_reg_read(CC1120_RSSI1));
ao_radio_put();
- /* Construct final packet */
-
- if (ret && ((uint8_t *) d)[size] == 0 && ((uint8_t *)d)[size+1] == 0)
- ((uint8_t *) d)[size + 1] = 0x80;
- else
- ((uint8_t *) d)[size + 1] = 0x00;
+ /* Store the received RSSI value; the crc-OK byte is already done */
((uint8_t *) d)[size] = (uint8_t) rssi;
printf ("CRC OK");
else
printf ("CRC BAD");
- printf (" RSSI %d", (int16_t) ((int8_t) bytes[32] >> 1) - 74);
+ printf (" RSSI %d", AO_RSSI_FROM_RADIO(bytes[32]));
for (b = 0; b < 32; b++)
printf (" %02x", bytes[b]);
printf ("\n");
#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
{ ao_radio_show, "R\0Show CC1120 status" },
{ ao_radio_beep, "b\0Emit an RDF beacon" },
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_GPIO->idr & (1 << SPI_2_MISO)) == 0)
+ 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);
+ ao_panic(AO_PANIC_SELF_TEST_CC1120);
+#endif
/* Enable the EXTI interrupt for the appropriate pin */
ao_enable_port(AO_CC1120_INT_PORT);
projects / fw / altos / blobdiff