diff options
Diffstat (limited to 'src/drivers/ao_cc1120.c')
| -rw-r--r-- | src/drivers/ao_cc1120.c | 423 |
1 files changed, 353 insertions, 70 deletions
diff --git a/src/drivers/ao_cc1120.c b/src/drivers/ao_cc1120.c index 2f9c296f..772014ee 100644 --- a/src/drivers/ao_cc1120.c +++ b/src/drivers/ao_cc1120.c @@ -21,10 +21,18 @@ #include <ao_fec.h> #include <ao_packet.h> -uint8_t ao_radio_wake; -uint8_t ao_radio_mutex; -uint8_t ao_radio_abort; -uint8_t ao_radio_in_recv; +#define AO_RADIO_MAX_RECV sizeof(struct ao_packet) +#define AO_RADIO_MAX_SEND sizeof(struct ao_packet) + +static uint8_t ao_radio_mutex; + +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 @@ -33,7 +41,7 @@ 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,AO_SPI_SPEED_1MHz) +#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(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) @@ -215,13 +223,34 @@ ao_radio_recv_abort(void) #define ao_radio_rdf_value 0x55 static uint8_t -ao_radio_marc_status(void) +ao_radio_get_marc_status(void) { return ao_radio_reg_read(CC1120_MARC_STATUS1); } static void -ao_radio_tx_isr(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; @@ -231,8 +260,10 @@ ao_radio_tx_isr(void) static void ao_radio_start_tx(void) { - ao_exti_set_callback(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, ao_radio_tx_isr); + 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); } @@ -243,7 +274,11 @@ ao_radio_idle(void) uint8_t state = ao_radio_strobe(CC1120_SIDLE); if ((state >> CC1120_STATUS_STATE) == CC1120_STATUS_STATE_IDLE) break; + if ((state >> CC1120_STATUS_STATE) == CC1120_STATUS_STATE_TX_FIFO_ERROR) + ao_radio_strobe(CC1120_SFTX); } + /* Flush any pending TX bytes */ + ao_radio_strobe(CC1120_SFTX); } /* @@ -258,7 +293,7 @@ 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 @@ -291,18 +326,19 @@ static const uint16_t packet_setup[] = { (0 << CC1120_PKT_CFG0_PKG_BIT_LEN) | (0 << CC1120_PKT_CFG0_UART_MODE_EN) | (0 << CC1120_PKT_CFG0_UART_SWAP_EN)), + AO_CC1120_MARC_GPIO_IOCFG, CC1120_IOCFG_GPIO_CFG_MARC_MCU_WAKEUP, }; 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)), - CC1120_IOCFG2, CC1120_IOCFG_GPIO_CFG_RX0TX1_CFG, + 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)), - CC1120_IOCFG2, CC1120_IOCFG_GPIO_CFG_CLKEN_SOFT, + AO_CC1120_INT_GPIO_IOCFG, CC1120_IOCFG_GPIO_CFG_CLKEN_SOFT, }; /* @@ -320,12 +356,12 @@ static const uint16_t packet_rx_setup[] = { /* * 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 */ @@ -355,7 +391,63 @@ static const uint16_t rdf_setup[] = { (0 << CC1120_PKT_CFG0_UART_SWAP_EN)), }; -static uint8_t ao_radio_mode; +/* + * 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 + +/* + * 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)), +}; + +#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 @@ -363,17 +455,23 @@ static uint8_t ao_radio_mode; #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 | 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(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) @@ -389,10 +487,10 @@ ao_radio_set_mode(uint8_t new_mode) ao_radio_reg_write(packet_tx_setup[i], packet_tx_setup[i+1]); if (changes & AO_RADIO_MODE_BITS_TX_BUF) - ao_radio_reg_write(CC1120_IOCFG2, CC1120_IOCFG_GPIO_CFG_TXFIFO_THR); + 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(CC1120_IOCFG2, CC1120_IOCFG_GPIO_CFG_RX0TX1_CFG); + 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) @@ -401,6 +499,17 @@ ao_radio_set_mode(uint8_t new_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; } @@ -428,12 +537,23 @@ ao_radio_setup(void) } 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_setup(); if (ao_config.radio_setting != last_radio_setting) { @@ -442,10 +562,7 @@ ao_radio_get(uint8_t len) 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) @@ -466,10 +583,12 @@ ao_rdf_run(void) { ao_radio_start_tx(); - cli(); - while (!ao_radio_wake && !ao_radio_abort) + ao_arch_block_interrupts(); + while (!ao_radio_wake && !ao_radio_abort && !ao_radio_mcu_wake) ao_sleep(&ao_radio_wake); - sei(); + ao_arch_release_interrupts(); + if (ao_radio_mcu_wake) + ao_radio_check_marc_status(); if (!ao_radio_wake) ao_radio_idle(); ao_radio_put(); @@ -518,7 +637,7 @@ static 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(); @@ -559,26 +678,64 @@ ao_radio_test_cmd(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(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; + uint8_t q; - encode_len = ao_fec_encode(d, size, encode); + 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); @@ -597,21 +754,86 @@ ao_radio_send(const void *d, uint8_t size) 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); + if (ao_radio_abort) { + ao_radio_idle(); + break; + } } + while (started && !ao_radio_abort && !ao_radio_tx_finished) + ao_radio_wait_isr(0); ao_radio_put(); } -#define AO_RADIO_MAX_RECV 90 +#define AO_RADIO_LOTS 64 + +void +ao_radio_send_aprs(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; + + /* 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; + 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; + } + /* Wait for the transmitter to go idle */ + ao_radio_wake = 0; + ao_radio_wait_isr(0); + } + ao_radio_put(); +} static uint8_t rx_data[(AO_RADIO_MAX_RECV + 4) * 2 * 8]; static uint16_t rx_data_count; @@ -633,8 +855,8 @@ ao_radio_rx_isr(void) { uint8_t d; - d = stm_spi2.dr; - stm_spi2.dr = 0; + d = AO_CC1120_SPI.dr; + AO_CC1120_SPI.dr = 0; if (rx_ignore == 0) { if (rx_data_cur >= rx_data_count) ao_exti_disable(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN); @@ -658,14 +880,23 @@ ao_radio_rx_isr(void) static uint16_t ao_radio_rx_wait(void) { - cli(); - 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(); + do { + if (ao_radio_mcu_wake) + ao_radio_check_marc_status(); + 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; + } + rx_waiting = 0; + ao_arch_release_interrupts(); + ao_clear_alarm(); + } while (ao_radio_mcu_wake); if (ao_radio_abort) return 0; rx_data_consumed += AO_FEC_DECODE_BLOCK; @@ -676,11 +907,12 @@ ao_radio_rx_wait(void) } uint8_t -ao_radio_recv(__xdata void *d, uint8_t size) +ao_radio_recv(__xdata void *d, uint8_t size, uint8_t 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; @@ -701,46 +933,75 @@ ao_radio_recv(__xdata void *d, uint8_t size) 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; - ao_radio_in_recv = 1; + /* 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; - stm_spi2.cr2 = 0; + AO_CC1120_SPI.cr2 = 0; /* clear any RXNE */ - (void) stm_spi2.dr; + (void) AO_CC1120_SPI.dr; - ao_exti_set_callback(AO_CC1120_INT_PORT, AO_CC1120_INT_PIN, ao_radio_rx_isr); + /* 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(timeout); + if (ao_radio_abort) { + ret = 0; + goto abort; + } + + 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); + + 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); ret = ao_fec_decode(rx_data, rx_data_count, d, size + 2, ao_radio_rx_wait); ao_radio_burst_read_stop(); - ao_radio_strobe(CC1120_SIDLE); - +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 = ao_radio_reg_read(CC1120_RSSI1); + ao_radio_rssi = rssi; - ao_radio_put(); + /* Bound it to the representable range */ + if (rssi > -11) + rssi = -11; + radio_rssi = AO_RADIO_FROM_RSSI (rssi); + } - /* Store the received RSSI value; the crc-OK byte is already done */ + ao_radio_strobe(CC1120_SIDLE); - ((uint8_t *) d)[size] = (uint8_t) rssi; + ao_radio_put(); - ao_radio_in_recv = 0; + /* Store the received RSSI value; the crc-OK byte is already done */ - if (ao_radio_abort) - ao_delay(1); + ((uint8_t *) d)[size] = radio_rssi; #if AO_PROFILE rx_last_done_tick = rx_done_tick; @@ -961,7 +1222,7 @@ static void ao_radio_show(void) { 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); @@ -969,7 +1230,7 @@ static void ao_radio_show(void) { } static void ao_radio_beep(void) { - ao_radio_rdf(RDF_PACKET_LEN); + ao_radio_rdf(); } static void ao_radio_packet(void) { @@ -1005,11 +1266,25 @@ ao_radio_test_recv() } } +#if HAS_APRS +#include <ao_aprs.h> + +static void +ao_radio_aprs() +{ + ao_packet_slave_stop(); + ao_aprs_send(); +} +#endif + #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 +#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_packet, "p\0Send a test packet" }, @@ -1026,6 +1301,7 @@ 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) @@ -1034,12 +1310,19 @@ ao_radio_init(void) 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_tx_isr); + 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]); } |