avr/prime-tx/main.c

#include <avr/io.h>
#include <base.h>
#include <display.h>
#include <rfm.h>
#include <spi.h>
#include <stdio.h>
#include <util/delay.h>

void status(display_t *display, rfm_t *radio, int clock) {
    op_mode_t mode = rfm_mode(radio);
    interrupt_flags_t flags = rfm_interrupts(radio);

    display_clear(display);

    char clock_str[16];
    sprintf(clock_str, "%4d ", clock);
    display_write_message(display, clock_str);

    if (mode.listen_on) display_write_message(display, "Listen ");
    if (mode.mode == sleep) display_write_message(display, "Sleep");
    if (mode.mode == standby) display_write_message(display, "Standby");
    if (mode.mode == fs) display_write_message(display, "FS");
    if (mode.mode == tx) display_write_message(display, "TX");
    if (mode.mode == rx) display_write_message(display, "RX");

    display_set_location(display, 1, 0);
    if (flags.mode_ready)       display_write_message(display, "R ");
    if (flags.rx_ready)         display_write_message(display, "RX ");
    if (flags.tx_ready)         display_write_message(display, "TX ");
    if (flags.timeout)          display_write_message(display, "TO ");
    if (flags.auto_mode)        display_write_message(display, "AM ");
    if (flags.sync_addr_match)  display_write_message(display, "SM ");
    if (flags.fifo_full)        display_write_message(display, "F ");
    if (flags.fifo_not_empty)   display_write_message(display, "NE ");
    if (flags.fifo_level)       display_write_message(display, "LE ");
    if (flags.fifo_overrun)     display_write_message(display, "OR ");
    if (flags.packet_sent)      display_write_message(display, "PS ");
    if (flags.payload_ready)    display_write_message(display, "PR");
    if (flags.crc_ok)           display_write_message(display, "CRC");
}

int main(void) {
    int clock = 0;

    display_t display = {
        .reg = {
            .output         = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 7 },
            .shift_clock    = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 6 },
            .latch_clock    = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 5 },
        },
    };

    rfm_t radio = (rfm_t){
        .spi    = {
            .clock          = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 1 },
            .data_out       = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 2 },
            .data_in        = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 3 },
            .chip_select    = { .ddr = &DDRB, .port = &PORTB, .pin = &PINB, .addr = 4 },
        },
        .irq    = { .ddr = &DDRE, .port = &PORTE, .pin = &PINE, .addr = 6 },
        .reset  = { .ddr = &DDRD, .port = &PORTD, .pin = &PIND, .addr = 4 },
    };

    _delay_ms(15);
    display_init(&display);

    rfm_error_e error;

    rfm_init(&radio, (uint8_t [4]){ 0xde, 0xca, 0xfb, 0xad }, 4, &error);

    status(&display, &radio, clock);

    int next_transmit = 0;
    while (1) {
        if (clock >= next_transmit) {
            rfm_transmit(&radio, (uint8_t [7]){ 1, 2, 3, 5, 7, 11, 13 }, 7);
            next_transmit = clock + 15;
        }
        status(&display, &radio, clock);
        interrupt_flags_t flags = rfm_interrupts(&radio);

        if (flags.packet_sent) {
            rfm_standby(&radio);
        }
        clock++;
        _delay_ms(1000);
    }

    /*
    */

    /*
    if (!error) {
        display_clear(&display);
        display_write_message(&display, "Error detected");
    } else {
        while (1) {
            status(&display, &radio);
            _delay_ms(1000);

            rfm_receive_mode(&radio);
            status(&display, &radio);
            _delay_ms(1000);
            rfm_standby(&radio);

        }
    }
    */

    /*
    status(&display, &radio);
    _delay_ms(1000);

    rfm_set_mode(&display, &radio, (op_mode_t){ .listen_on = true, .mode = standby });
    _delay_ms(1000);
    rfm_set_mode(&display, &radio, (op_mode_t){ .listen_on = true, .mode = standby });
    _delay_ms(1000);
    */

    /*
    rfm_packet_format(&radio, fixed, 8);

    rfm_set_mode(&display, &radio, (op_mode_t){ .listen_on = false, .mode = rx });
    _delay_ms(1000);
    status(&display, &radio);
    */


    /*
    while (1) {
        status(&display, &radio);
        _delay_ms(1000);

        uint8_t data;
        rfm_receive(rfm, &data, 1);
        */

        /*
        uint8_t b[8];
        char msg[32];
        status(&display, &radio);
        _delay_ms(1000);

        interrupt_flags_t flags = rfm_interrupts(&radio);

        if (flags.fifo_not_empty) {
            rfm_receive(&radio, b, 8);

            display_clear(&display);
            for (int i = 0; i < 8; i++) {
                sprintf(msg, "%x", b[i]);
            }
            display_write_message(&display, msg);
            _delay_ms(1000);
        }
        */
    // }

    /*
    spi_acquire(&rfm.spi);
    spi_transfer_byte(&rfm.spi, 0x11);
    spi_transfer_byte(&rfm.spi, 0x01);
    spi_release(&rfm.spi);

    spi_acquire(&rfm.spi);
    spi_transfer_byte(&rfm.spi, 0x10);
    spi_transfer_byte(&rfm.spi, 1);
    spi_transfer_byte(&rfm.spi, 2);
    spi_transfer_byte(&rfm.spi, 3);
    spi_transfer_byte(&rfm.spi, 5);
    spi_transfer_byte(&rfm.spi, 7);
    spi_transfer_byte(&rfm.spi, 11);
    spi_transfer_byte(&rfm.spi, 13);
    spi_release(&rfm.spi);

    status = rfm_status(&rfm);
    if (status & _BV(7)) {
        clear_line(&light);
    } else {
        set_line(&light);
    }
    */

    /*
    uint8_t count[1] = { 0 };
    while(1) {
        rfm_send_data(&rfm, count, 1);
        count[0]++;
        set_line(&light);
        _delay_ms(50);
        clear_line(&light);
        _delay_ms(50);
    }
    */
    return 0;
}