Rewrite my init function, carefully following the RadioHead library
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b8494551a4
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7846fa175f
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@ -9,15 +9,13 @@
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void status(display_t *display, rfm_t *radio, int clock) {
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op_mode_t mode = rfm_mode(radio);
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interrupt_flags_t flags = rfm_interrupts(radio);
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uint8_t rssi = rfm_rssi(radio);
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// uint8_t rssi = rfm_rssi(radio);
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display_clear(display);
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/*
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char clock_str[16];
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sprintf(clock_str, "%4d ", clock);
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display_write_message(display, clock_str);
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*/
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if (mode.listen_on) display_write_message(display, "Listen ");
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if (mode.mode == sleep) display_write_message(display, "Sleep");
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@ -28,9 +26,11 @@ void status(display_t *display, rfm_t *radio, int clock) {
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display_set_location(display, 1, 0);
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/*
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char msg[16];
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snprintf(msg, 15, "[-%d] ", rssi / 2);
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display_write_message(display, msg);
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*/
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if (flags.mode_ready) display_write_message(display, "R ");
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if (flags.rx_ready) display_write_message(display, "RX ");
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@ -70,16 +70,19 @@ int main(void) {
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_delay_ms(15);
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display_init(&display);
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display_clear(&display);
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display_write_message(&display, "waking up");
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rfm_error_e error;
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rfm_init(&radio, (uint8_t [4]){ 0xde, 0xca, 0xfb, 0xad }, 4, &error);
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rfm_listen(&radio);
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/*
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if (!error) {
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display_write_message(&display, "error detected");
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return 0;
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}
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*/
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/*
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uint8_t word[8];
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@ -99,12 +102,15 @@ int main(void) {
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_delay_ms(5000);
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*/
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/*
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char msg[16];
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uint32_t frequency = rfm_frequency(&radio);
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snprintf(msg, 15, "F: %ld", frequency);
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display_write_message(&display, msg);
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_delay_ms(5000);
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*/
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int clock = 0;
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while(1) {
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// char msg[16];
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// uint8_t packet[66];
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@ -116,7 +122,23 @@ int main(void) {
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// display_write_message(&display, msg);
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// _delay_ms(1000);
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// }
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status(&display, &radio, 0);
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interrupt_flags_t flags = rfm_interrupts(&radio);
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if (flags.fifo_not_empty) {
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uint8_t packet[66];
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uint8_t length;
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rfm_receive(&radio, packet, &length);
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char msg[16];
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snprintf(msg, 15, "[%d]: %d", length, packet[0]);
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display_clear(&display);
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display_write_message(&display, msg);
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_delay_ms(1000);
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}
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status(&display, &radio, clock);
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_delay_ms(1000);
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clock++;
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}
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}
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@ -17,19 +17,29 @@ You should have received a copy of the GNU General Public License along with Lum
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#define REG_FIFO 0x00
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#define REG_OP_MODE 0x01
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#define REG_DATA_MODUL 0x02
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#define REG_BITRATE_MSB 0x03
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#define REG_BITRATE_LSB 0x04
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#define REG_FDEV_MSB 0x05
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#define REG_FDEV_LSB 0x06
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#define REG_VERSION 0x10
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#define REG_PA_LEVEL 0x11
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#define REG_RXBW 0x19
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#define REG_AFCBW 0x1a
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#define REG_RSSI_CONFIG 0x23
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#define REG_RSSI_VALUE 0x24
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#define REG_DIO_MAPPING1 0x25
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#define REG_IRQ_FLAGS1 0x27
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#define REG_IRQ_FLAGS2 0x28
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#define REG_RSSI_THRESH 0x29
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#define REG_PREAMBLE_MSB 0x2c
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#define REG_PREAMBLE_LSB 0x2d
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#define REG_SYNC_CONFIG 0x2e
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#define REG_SYNC_VALUE1 0x2f
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#define REG_PACKET_CONFIG1 0x37
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#define REG_FIFO_THRESH 0x3c
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#define REG_TEST_PA1 0x5a
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#define REG_TEST_PA2 0x5c
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#define REG_TEST_DAGC 0x6f
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#define PA1_LOW_POWER 0x55
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#define PA1_HIGH_POWER 0x5D
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@ -81,27 +91,56 @@ void rfm_init(rfm_t *rfm, uint8_t *sync_word, size_t length, rfm_error_e *error)
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return;
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}
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rfm_set_mode(rfm, (op_mode_t){ .listen_on = false, .mode = standby });
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_rfm_write(rfm, REG_DATA_MODUL, (uint8_t [1]){ _BV(3) }, 1);
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// RadioHead packet format
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// 4 bytes preamble (done automatically)
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// 2 Sync words 2d, d4 (configured here, but done automatically)
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// 2 CRC CCITT octets computed on the header, length, and data (wat?)
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// 0 to 60 bytes of data
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// RSSI Threshhold -114dbm
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// No RFM69HCW adress filtering. Payload has custom headers.
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_rfm_write(rfm, REG_FIFO_THRESH, (uint8_t [1]){ 0x8f }, 1);
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_rfm_write(rfm, REG_RSSI_THRESH, (uint8_t [1]){ 0xe4 }, 1);
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// Fading margin improvement (3.4.4). Improved Margin, LowBeta off
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_rfm_write(rfm, REG_TEST_DAGC, (uint8_t [1]){ 0x30 }, 1);
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_rfm_set_low_power(rfm);
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_rfm_write(rfm, REG_PACKET_CONFIG1,
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(uint8_t [1]){
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_BV(7) /* variable length packets */
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| _BV(6) /* DC whitening */
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| _BV(4) /* CRC on */
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| _BV(0) /* packet filtering does not require node address */
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}, 1);
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_rfm_write(rfm, REG_SYNC_CONFIG, (uint8_t [1]){ _BV(7) | (length << 2) }, 1);
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uint8_t syncconfig;
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_rfm_read(rfm, REG_SYNC_CONFIG, &syncconfig, 1);
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uint8_t word_base = REG_SYNC_VALUE1;
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for (int i = 0; i < length; i++) {
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_rfm_write(rfm, word_base + i, &sync_word[i], 1);
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}
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syncconfig &= ~0b00111000;
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syncconfig |= (length - 1) << 3;
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_rfm_write(rfm, REG_SYNC_CONFIG, &syncconfig, 1);
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_rfm_write(rfm, REG_PREAMBLE_MSB, (uint8_t [1]){ 0 }, 1);
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_rfm_write(rfm, REG_PREAMBLE_LSB, (uint8_t [1]){ 4 }, 1);
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// Datamodul: CONFIG_FSK (Packet mode, FSK, no shaping: 0b00000000
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// BitRateMSB: 0x00
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// BitRateLSB: 0x80 (oscillator 32,000,000 / bitrate 250kbps = 128 (0x80))
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// FDEVMSB: 0x10
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// FDEVLSB: 0x00
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// RXBW: 0xe0
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// AFCBW: 0xe0
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// PacketConfig1: CONFIG_WHITE (variable packet format, whitening on, crc on, no address filtering)
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_rfm_write(rfm, REG_DATA_MODUL, (uint8_t [1]){ 0 }, 1);
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_rfm_write(rfm, REG_BITRATE_MSB, (uint8_t [1]){ 0 }, 1);
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_rfm_write(rfm, REG_BITRATE_LSB, (uint8_t [1]){ 0x80 }, 1);
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_rfm_write(rfm, REG_FDEV_MSB, (uint8_t [1]){ 0x10 }, 1);
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_rfm_write(rfm, REG_FDEV_LSB, (uint8_t [1]){ 0x00 }, 1);
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_rfm_write(rfm, REG_RXBW, (uint8_t [1]){ 0xe0 }, 1);
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_rfm_write(rfm, REG_AFCBW, (uint8_t [1]){ 0xe0 }, 1);
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_rfm_write(rfm, REG_PACKET_CONFIG1, (uint8_t [1]){ 0b10110000 }, 1);
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// set power level 13dbm
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// This is super complicated. Dig through the RadioHead library and the documentation and make things better.
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_rfm_write(rfm, REG_PA_LEVEL, (uint8_t [1]){ 0b11000000 | 31 }, 1);
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}
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uint8_t sync_word(rfm_t *rfm, uint8_t sync_word[8]) {
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@ -167,18 +206,11 @@ void rfm_receive_mode(rfm_t *rfm) {
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rfm_set_mode(rfm, (op_mode_t){ .listen_on = false, .mode = rx });
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}
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void rfm_receive(display_t *display, rfm_t *rfm, uint8_t data[66], uint8_t *length) {
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display_clear(display);
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void rfm_receive(rfm_t *rfm, uint8_t data[66], uint8_t *length) {
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_rfm_write(rfm, REG_DIO_MAPPING1, (uint8_t [1]){ _BV(6) }, 1);
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rfm_set_mode(rfm, (op_mode_t){ .listen_on = false, .mode = rx });
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_rfm_read(rfm, REG_FIFO, length, 1);
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char msg[16];
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sprintf(msg, "length: %d", *length);
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display_write_message(display, msg);
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_delay_ms(1000);
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if (*length > 0) {
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_rfm_read(rfm, 0x00, data, *length);
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}
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@ -77,7 +77,7 @@ void rfm_sleep(rfm_t *);
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void rfm_standby(rfm_t *);
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void rfm_receive_mode(rfm_t *);
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void rfm_transmit(rfm_t *rfm, uint8_t *data, uint8_t length);
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void rfm_receive(display_t *display, rfm_t *rfm, uint8_t data[66], uint8_t *length);
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void rfm_receive(rfm_t *rfm, uint8_t data[66], uint8_t *length);
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op_mode_t rfm_mode(rfm_t *rfm);
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void rfm_set_mode(rfm_t *rfm, op_mode_t mode);
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