Sean Burford / i2c_pullup

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Dependencies:   max32625pico maxim-dev mbed-rtos USBDevice

Fork of PICO_USB_I2C_SPI by Greg Steiert

main.cpp

Committer:
seanburford
Date:
2017-11-20
Revision:
14:7a4b0f9d1474
Parent:
13:fed6ff32bf5d
Child:
15:9801f08ce0ee

File content as of revision 14:7a4b0f9d1474:

#include "mbed.h"
#include "rtos.h"

#include "gpio_api.h"
#include "max32625pico.h"

// #define MAX_GPIO_API 1
#define MAX_I2C_API 1

static DigitalOut rLED(LED1);
static DigitalOut gLED(LED2);
static DigitalOut bLED(LED3);

int main()
{
    rLED = LED_ON;
    gLED = LED_ON;
    bLED = LED_OFF;

    MAX32625PICO pico(
        MAX32625PICO::IOH_3V3, MAX32625PICO::VIO_IOH, MAX32625PICO::VIO_IOH);

#ifdef MAX_GPIO_API
    gpio_t gpio_p1_6;
    gpio_t gpio_p1_7;
    gpio_init(&gpio_p1_6, P1_6);
    gpio_init(&gpio_p1_7, P1_7);
    // gpio_api.c:104 sets the pin to MXC_V_GPIO_OUT_MODE_HIGH_Z_WEAK_PULLUP
    pin_dir_mode(P1_6, PIN_INPUT, PullUp);
    pin_dir_mode(P1_7, PIN_INPUT, PullUp);
#else
    DigitalInOut(P1_6, PIN_INPUT, PullUp, 1);
    DigitalInOut(P1_7, PIN_INPUT, PullUp, 1);
#endif

    Thread::wait(15);

#ifdef MAX_I2C_API
    i2c_t i2c_o;
    i2c_init(&i2c_o, P1_6, P1_7);
#else
    I2C i2c(P1_6, P1_7);
#endif

    rLED = LED_OFF;
    gLED = LED_OFF;

    char dbuf[32];
    while(1) {
        Thread::wait(15);
#ifdef MAX_I2C_API
        if (i2c_read(&i2c_o, 0x55, dbuf, 8, 1) > 0) {
#else
        if (i2c.read(0x55, dbuf, 8) == 0) {
#endif
            gLED = !gLED;
        } else {
            rLED = !rLED;
        }
    }
}