pikapython/bsp/w806/Demo/i2c/main.c

#include <stdio.h>
#include "wm_hal.h"

I2C_HandleTypeDef hi2c;
void Error_Handler(void);
static void I2C_Init(void);

#define DEVICE_ADDR	0xA0

int main(void)
{
	char *w_buf = "AT24CXX I2C WRITE THEN READ TEST FOR LONG TIME";
	uint8_t len = strlen(w_buf);
	uint8_t r_buf[50] = {0};
	int i = 0;
	
	SystemClock_Config(CPU_CLK_160M);
	printf("enter main\r\n");
	printf("len = %d\n", len);
	I2C_Init();
	for (i = 0; i < len; i++)
	{
		HAL_I2C_Write(&hi2c, DEVICE_ADDR, 0x00 + i, (uint8_t *)(w_buf + i), 1);
		HAL_Delay(10);
	}
	
	while (1)
	{
		memset(r_buf, 0, len);
		if (HAL_I2C_Read(&hi2c, DEVICE_ADDR, 0x00, r_buf, len) != HAL_OK)
		{
			printf("read failed\r\n");
		}
		if (memcmp(w_buf, r_buf, len))
		{
			printf("err: %s\r\n", r_buf);
		}
		i++;
		if ((i % 10000) == 0)
		{
			printf("i = %d\r\n", i);
		}
	}

	while (1)
	{
		HAL_Delay(1000);
	}
}

static void I2C_Init(void)
{
	hi2c.SCL_Port = GPIOA;
	hi2c.SCL_Pin = GPIO_PIN_1;
	hi2c.SDA_Port = GPIOA;
	hi2c.SDA_Pin = GPIO_PIN_4;

	HAL_I2C_Init(&hi2c);
}

void Error_Handler(void)
{
	while (1)
	{
	}
}

void assert_failed(uint8_t *file, uint32_t line)
{
	printf("Wrong parameters value: file %s on line %d\r\n", file, line);
}