prototroller

#include <stdio.h>
#include <string.h>
#include "pico/stdlib.h"
#include "pico/binary_info.h"
#include "../libraries/Component.h"
#include "../libraries/SPISlave.h"

#define BUTTON_PIN 15

int main() {
    Component button;
    SPISlave spi(0x100);

    // Initialize logging if enabled
    if(LOGGING)
    {
        stdio_init_all();
    }

    printf("Button Module");

    // Emable SPI0 at 1 MHz and connect to GPIOs
    spi.InitComponent
    (
        DEFAULT_SPI,
        SPI_TX_PIN,
        SPI_RX_PIN,
        SPI_SCK_PIN,
        SPI_CSN_PIN,
        1000 * 1000
    );

    // Initialize the active-low button GPIO
    gpio_init(BUTTON_PIN);

    // Button is an input
    gpio_set_dir(BUTTON_PIN, GPIO_IN);

    // Using an external pull-up, so disable internal pulls
    gpio_set_pulls(BUTTON_PIN, false, false);

    // Make SPI pins available for use with PicoTool
    // bi_decl(
    //     bi_4pins_with_func(
    //         SPI_MOSI_PIN,
    //         SPI_MISO_PIN,
    //         SPI_SCK_PIN,
    //         SPI_SS_PIN,
    //         GPIO_FUNC_SPI
    //     )
    // );

    // First data sent over SPI is the module identifier
    spi.SlaveWriteIdentifier(BUTTON_MODULE_ID);

    // Declare button state data holder
    uint8_t state;

    // After identifier is sent, continually send the GPIO state
    while(true)
    {
        state = gpio_get(BUTTON_PIN);
        printf( state ? "Not Pressed\n" : "Pressed\n");

        // Write the button state, and re-send module identifier if requested
        while(spi.SlaveWrite(&state, 1))
        {
            spi.SlaveWriteIdentifier(BUTTON_MODULE_ID);
        }
    }

}