main.c

#include <pico/stdlib.h>
#include <hardware/i2c.h>
#include <stdio.h>
#include <unistd.h>

unsigned *SDApinctrl = (void *)(IO_BANK0_BASE + IO_BANK0_GPIO0_CTRL_OFFSET);
unsigned *SCLpinctrl = (void *)(IO_BANK0_BASE + IO_BANK0_GPIO1_CTRL_OFFSET);

const uint8_t init[4] = {0x21, 0xa0, 0xe1, 0x81};
const uint8_t zeile[8] = {0x00, 0x02, 0x04, 0x06, 0x08, 0x10, 0x12, 0x14};
const uint8_t fill[17] = {0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
const uint8_t empty[17] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
const uint8_t achtel[17] = {0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
const uint8_t viertel[17] = {0x00, 0xff, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
const uint8_t dreiachtel[17] = {0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
const uint8_t hälfte[17] = {0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
const uint8_t fünfachtel[17] = {0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
const uint8_t dreiviertel[17] = {0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00};
const uint8_t siebenachtel[17] = {0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0x00, 0x00};
const uint8_t ganzes[17] = {0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00, 0xff, 0x00};

int main()
{

    i2c_init(i2c_default, 100000);
    gpio_set_function(0, GPIO_FUNC_I2C);
    gpio_set_function(1, GPIO_FUNC_I2C);

    gpio_pull_up(1);
    gpio_pull_up(0);

    i2c_write_blocking(i2c_default, 0x70, &init[0], 1, false);
    i2c_write_blocking(i2c_default, 0x70, &init[1], 1, false);
    i2c_write_blocking(i2c_default, 0x70, &init[2], 1, false);
    i2c_write_blocking(i2c_default, 0x70, &init[3], 1, false);

    i2c_write_blocking(i2c_default, 0x70, zeile, 4, false);

    i2c_write_blocking(i2c_default, 0x70, empty, 17, false);

    i2c_write_blocking(i2c_default, 0x70, achtel, 17, false);

    for (int j = 0; j < 10000000; j++)
    {
        volatile int i = 0;
    }

    i2c_write_blocking(i2c_default, 0x70, viertel, 17, false);
    for (int j = 0; j < 10000000; j++)
    {
        volatile int i = 0;
    }

    i2c_write_blocking(i2c_default, 0x70, dreiachtel, 17, false);
    for (int j = 0; j < 10000000; j++)
    {
        volatile int i = 0;
    }

    i2c_write_blocking(i2c_default, 0x70, hälfte, 17, false);
    for (int j = 0; j < 10000000; j++)
    {
        volatile int i = 0;
    }

    i2c_write_blocking(i2c_default, 0x70, fünfachtel, 17, false);
    for (int j = 0; j < 10000000; j++)
    {
        volatile int i = 0;
    }

    i2c_write_blocking(i2c_default, 0x70, dreiviertel, 17, false);
    for (int j = 0; j < 10000000; j++)
    {
        volatile int i = 0;
    }

    i2c_write_blocking(i2c_default, 0x70, siebenachtel, 17, false);
    for (int j = 0; j < 10000000; j++)
    {
        volatile int i = 0;
    }

    i2c_write_blocking(i2c_default, 0x70, ganzes, 17, false);
    for (int j = 0; j < 10000000; j++)
    {
        volatile int i = 0;
    }

    return 0;
}