diff options
Diffstat (limited to 'src/drivers/ao_cc1120.c')
| -rw-r--r-- | src/drivers/ao_cc1120.c | 169 |
1 files changed, 125 insertions, 44 deletions
diff --git a/src/drivers/ao_cc1120.c b/src/drivers/ao_cc1120.c index 67a36c5c..4378716d 100644 --- a/src/drivers/ao_cc1120.c +++ b/src/drivers/ao_cc1120.c @@ -19,6 +19,7 @@ #include <ao_cc1120.h> #include <ao_exti.h> #include <ao_fec.h> +#include <ao_packet.h> uint8_t ao_radio_wake; uint8_t ao_radio_mutex; @@ -102,6 +103,35 @@ 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_select(); + ao_radio_spi_send(data, d); +} + +static void +ao_radio_burst_read_stop (void) +{ + ao_radio_deselect(); +} + + static uint8_t ao_radio_strobe(uint8_t addr) { @@ -248,9 +278,18 @@ ao_radio_rx_done(void) } static void +ao_radio_tx_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_radio_reg_write(CC1120_IOCFG2, CC1120_IOCFG_GPIO_CFG_RX0TX1_CFG); + ao_exti_set_callback(&AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, ao_radio_tx_isr); ao_exti_enable(&AO_CC1120_INT_PORT, AO_CC1120_INT_PIN); ao_radio_strobe(CC1120_STX); } @@ -336,29 +375,13 @@ void ao_radio_send(void *d, uint8_t size) { uint8_t marc_status; - uint8_t prepare[size + AO_FEC_PREPARE_EXTRA]; - uint8_t prepare_len; - uint8_t encode[sizeof(prepare) * 2]; + uint8_t encode[size + AO_FEC_PREPARE_EXTRA]; uint8_t encode_len; - uint8_t interleave[sizeof(encode)]; - uint8_t interleave_len; - fec_dump_bytes(d, size, "Input"); + encode_len = ao_fec_encode(d, size, encode); - prepare_len = ao_fec_prepare(d, size, prepare); - fec_dump_bytes(prepare, prepare_len, "Prepare"); - - ao_fec_whiten(prepare, prepare_len, prepare); - fec_dump_bytes(prepare, prepare_len, "Whiten"); - - encode_len = ao_fec_encode(prepare, prepare_len, encode); - fec_dump_bytes(encode, encode_len, "Encode"); - - interleave_len = ao_fec_interleave(encode, encode_len, interleave); - fec_dump_bytes(interleave, interleave_len, "Interleave"); - - ao_radio_get(interleave_len); - ao_radio_fifo_write(interleave, interleave_len); + ao_radio_get(encode_len); + ao_radio_fifo_write(encode, encode_len); ao_radio_wake = 0; @@ -373,34 +396,92 @@ ao_radio_send(void *d, uint8_t size) ao_radio_put(); } +#define AO_RADIO_MAX_RECV 90 + +static uint8_t rx_data[2048]; +static uint16_t rx_data_count; +static uint16_t rx_data_cur; +static uint8_t rx_started; + +static void +ao_radio_rx_isr(void) +{ + if (rx_started) { + rx_data[rx_data_cur++] = stm_spi2.dr; + if (rx_data_cur >= rx_data_count) { + ao_exti_disable(&AO_CC1120_INT_PORT, AO_CC1120_INT_PIN); + ao_radio_wake = 1; + ao_wakeup(&ao_radio_wake); + } + } else { + (void) stm_spi2.dr; + rx_started = 1; + } + stm_spi2.dr = 0x00; +} + uint8_t ao_radio_recv(__xdata void *d, uint8_t size) { - uint8_t marc_status = CC1120_MARC_STATUS1_NO_FAILURE; + uint8_t len = ((size - 2) + 4) * 2; /* two bytes for status */ + uint16_t i; + + rx_data_count = sizeof (rx_data); + rx_data_cur = 0; + rx_started = 0; + + printf ("len %d rx_data_count %d\n", len, rx_data_count); /* configure interrupt pin */ - ao_radio_get(size); + ao_radio_get(len); ao_radio_wake = 0; + ao_radio_abort = 0; + + ao_radio_reg_write(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_radio_reg_write(CC1120_EXT_CTRL, 0); + + ao_radio_reg_write(CC1120_IOCFG2, CC1120_IOCFG_GPIO_CFG_CLKEN_SOFT); + + stm_spi2.cr2 = 0; + + /* clear any RXNE */ + (void) stm_spi2.dr; + + 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_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) - break; - ao_radio_wake = 0; - } + ao_radio_burst_read_start(CC1120_SOFT_RX_DATA_OUT); +#if 1 + cli(); + while (!ao_radio_wake && !ao_radio_abort) ao_sleep(&ao_radio_wake); - } sei(); - if (marc_status != CC1120_MARC_STATUS1_RX_FINISHED) - ao_radio_fifo_read(d, size); + +#else + printf ("Hit a character to stop..."); flush(); + getchar(); + putchar('\n'); + ao_exti_disable(&AO_CC1120_INT_PORT, AO_CC1120_INT_PIN); +#endif + ao_radio_burst_read_stop(); + + ao_radio_strobe(CC1120_SIDLE); + ao_radio_put(); - return marc_status == CC1120_MARC_STATUS1_RX_FINISHED; + + printf ("Received data:"); + for (i = 0; i < rx_data_cur; i++) { + if ((i & 15) == 0) + printf ("\n"); + printf (" %02x", rx_data[i]); + } + printf ("\n"); + return 1; } /* @@ -477,13 +558,6 @@ static const uint16_t radio_setup[] = { static uint8_t ao_radio_configured = 0; -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_setup(void) @@ -745,6 +819,12 @@ static void ao_radio_packet(void) { ao_radio_send(packet, sizeof (packet)); } +void +ao_radio_test_recv() +{ + ao_radio_recv(0, 34); +} + #endif static const struct ao_cmds ao_radio_cmds[] = { @@ -753,6 +833,7 @@ static const struct ao_cmds ao_radio_cmds[] = { { ao_radio_show, "R\0Show CC1120 status" }, { 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 } }; @@ -776,7 +857,7 @@ ao_radio_init(void) /* 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_exti_setup(&AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, AO_EXTI_MODE_FALLING, ao_radio_tx_isr); ao_cmd_register(&ao_radio_cmds[0]); } |