main.c

#include <pico/stdlib.h>
#include <hardware/i2c.h>
/*
unsigned* enablerregister = (void *) (SIO_BASE + SIO_GPIO_OE_SET_OFFSET);
unsigned* volatile outregister = (void *) (SIO_BASE + SIO_GPIO_OUT_SET_OFFSET);
unsigned* volatile outclearregister = (void *) (SIO_BASE + SIO_GPIO_OUT_CLR_OFFSET);
unsigned* gpioregister = (void *) (IO_BANK0_BASE + IO_BANK0_GPIO25_CTRL_OFFSET );
unsigned* resetspace = (void *) (RESETS_BASE);
unsigned* resetdone = (void*) (RESETS_BASE + RESETS_RESET_DONE_IO_BANK0_BITS);
//unsigned* resetdone = (void*) RESETS_RESET_DONE_IO_BANK0_BITS;
*/

//unsigned* SDApin = (void*)(SIO_BASE + IO_BANK0_GPIO0_CTRL_FUNCSEL_VALUE_I2C0_SDA);
//unsigned* SCLpin = (void*)(IO_BANK0_GPIO1_CTRL_FUNCSEL_VALUE_I2C0_SCL);




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







int main() {
    //*SDApinctrl = IO_BANK0_GPIO0_CTRL_FUNCSEL_VALUE_I2C0_SDA;
    //*SCLpinctrl = IO_BANK0_GPIO1_CTRL_FUNCSEL_VALUE_I2C0_SCL;
    //gpio_set_function_masked(1 | 2, GPIO_FUNC_I2C); //


    gpio_set_function_masked(*SDApinctrl , IO_BANK0_GPIO0_CTRL_FUNCSEL_VALUE_I2C0_SDA); //
    gpio_set_function_masked(*SCLpinctrl , IO_BANK0_GPIO1_CTRL_FUNCSEL_VALUE_I2C0_SCL); //
    
    i2c_init(i2c_default, 100000);
    i2c_write_blocking(i2c_default, 0x70 , 0x21, 1 ,false);

    gpio_pull_up(SDApinctrl);
    

    
    /*
    *resetspace &= ~(1u<<5);
    *gpioregister = 5;
    *enablerregister = 0x01 << PICO_DEFAULT_LED_PIN;

    if(*resetdone & (0x1 <<5)){

    }

    for(int i = 0; i< 10 ;i++){
        for(int j = 0; j <1000000; j++){
            *outregister = 0x01 << PICO_DEFAULT_LED_PIN;
        }
        for(int j = 0; j <1000000; j++){
            //*outregister = 0x00 << SIO_GPIO_HI_OUT_CLR_OFFSET;
            *outclearregister = 0x01 << PICO_DEFAULT_LED_PIN;

            

        }
    }
    */
    return 0;
}