diff options
Diffstat (limited to 'src/drivers/ao_cc1120.c')
| -rw-r--r-- | src/drivers/ao_cc1120.c | 73 |
1 files changed, 56 insertions, 17 deletions
diff --git a/src/drivers/ao_cc1120.c b/src/drivers/ao_cc1120.c index ed26e28d..7654af85 100644 --- a/src/drivers/ao_cc1120.c +++ b/src/drivers/ao_cc1120.c @@ -261,7 +261,7 @@ ao_radio_idle(void) #define PACKET_DEV_M 80 /* - * For our packet data, set the symbol rate to 38360 Baud + * For our packet data, set the symbol rate to 38400 Baud * * (2**20 + DATARATE_M) * 2 ** DATARATE_E * Rdata = -------------------------------------- * fosc @@ -383,8 +383,8 @@ static const uint16_t rdf_setup[] = { * Rdata = 9599.998593330383301 * */ -#define APRS_DRATE_E 5 -#define APRS_DRATE_M 25166 +#define APRS_DRATE_E 7 +#define APRS_DRATE_M 239914 static const uint16_t aprs_setup[] = { CC1120_DEVIATION_M, APRS_DEV_M, @@ -432,8 +432,9 @@ static uint16_t ao_radio_mode; #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) +#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) static void ao_radio_set_mode(uint16_t new_mode) @@ -642,17 +643,23 @@ ao_radio_test_cmd(void) } } +static void +ao_radio_wait_isr(void) +{ + ao_radio_wake = 0; + ao_arch_block_interrupts(); + while (!ao_radio_wake) + ao_sleep(&ao_radio_wake); + ao_arch_release_interrupts(); +} + 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(); + ao_radio_wait_isr(); if (!wait_fifo) return 0; fifo_space = ao_radio_tx_fifo_space(); @@ -725,25 +732,47 @@ ao_radio_send_lots(ao_radio_fill_func fill) cnt = -cnt; } total += cnt; - if (done) { + + /* At the last buffer, set the total length */ + 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; + + /* Wait for some space in the fifo */ + while ((fifo_space = ao_radio_tx_fifo_space()) == 0) { + ao_radio_wake = 0; + ao_arch_block_interrupts(); + while (!ao_radio_wake) + ao_sleep(&ao_radio_wake); + ao_arch_release_interrupts(); + } 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; - cnt -= this_len; + if (!started) { ao_radio_start_tx(); started = 1; - } - fifo_space = ao_radio_wait_tx(!done || cnt); + } else + ao_exti_enable(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN); } + /* Wait for the transmitter to go idle */ + ao_radio_wait_isr(); } ao_radio_put(); } @@ -1140,11 +1169,21 @@ ao_radio_test_recv() } } +#include <ao_aprs.h> + +static void +ao_radio_aprs() +{ + ao_packet_slave_stop(); + ao_aprs_send(); +} + #endif static const struct ao_cmds ao_radio_cmds[] = { { ao_radio_test_cmd, "C <1 start, 0 stop, none both>\0Radio carrier test" }, #if CC1120_DEBUG + { ao_radio_aprs, "G\0Send APRS packet" }, { ao_radio_show, "R\0Show CC1120 status" }, { ao_radio_beep, "b\0Emit an RDF beacon" }, { ao_radio_packet, "p\0Send a test packet" }, |