bossay_release_out/vendor/bossay/dianzhen_demo1/matrix/EMATRIX.c

#include <stdio.h>
#include "ohos_init.h"
#include "iot_gpio.h"
#include "iot_gpio_ex.h"
#include "iot_i2c.h"
#include "cmsis_os2.h"
#define IIC_SDA 0
#define IIC_SCL 1 
#define ADDR 0x27 // 0100111
#define IIC_IDX 1

/*
Command Register
0 Input port 0
1 Input port 1
2 Output port 0
3 Output port 1
4 Polarity Inversion port 0
5 Polarity Inversion port 1
6 Con?guration port 0
7 Con?guration port 1
*/
#define CMD_CFG0 6
#define CMD_CFG1 7
#define CMD_OUT0 2
#define CMD_OUT1 3

int write_iic(uint8_t* data)
{
  int ret = IoTI2cWrite(IIC_IDX, (ADDR << 1) | 0x00, data, 3);
  return ret;
}

//start 
uint8_t CFG0[] = {CMD_CFG0,0x0,0x0}; //配置为输出
uint8_t CFG1[] = {CMD_CFG1,0x0,0x0}; //配置为输出
uint8_t OUT0[] = {CMD_OUT0,0x00,0x00}; // 输出
uint8_t OUT1[] = {CMD_OUT1,0x00,0x00}; // 输出

char alpha[8][9] = 
{
 "11111111",
 "11111111",
 "11100000",
 "11111111",
 "11111111",
 "11100000",
 "11100000",
 "11111111"
};
void write_data(char byte1,char byte2)
{
 //printf("write %02x ,%02x\n",byte1,byte2);
  uint8_t data[3] = {CMD_OUT0,0x00,0x00};
  data[1] = byte1;
  data[2] = byte2;
  write_iic(data);
  data[0] = CMD_OUT1;
  write_iic(data);
}
void iic(void* args )
{
 printf("iic thread running...");
 IoTGpioInit(IIC_SDA);
 IoTGpioInit(IIC_SCL);
 IoTGpioSetFunc(IIC_SDA, IOT_GPIO_FUNC_GPIO_0_I2C1_SDA);
 IoTGpioSetFunc(IIC_SCL, IOT_GPIO_FUNC_GPIO_1_I2C1_SCL);
 IoTI2cInit(IIC_IDX, 400000); 

 write_iic(CFG0);
 write_iic(CFG1);
 usleep(200*1000);
 write_iic(OUT0);
 write_iic(OUT1);
 usleep(1000*1000);

  while(1)
  {
   for(int i=0;i<8;i++)
   {
    unsigned char hex = 0;
    //将alpha第i行转换为hex
    for(int j=0;j<8;j++)
    {
     hex = hex <<1;
     if(alpha[i][j] == '1')
	 {
      hex =  hex  | 0x1;
     }
    }
   OUT1[2] = hex; //设置列
   OUT0[1] = ~(1 << i); //选择第i行
   write_data(~(1 << i),hex);
  }
}

 printf("set finish!\n");
}

void iic_entry()
{
  printf("iic_entry called \n");
  osThreadAttr_t attr;
  attr.name = "thread_iic";
  attr.attr_bits = 0U; // 如果为1 ，则可以使用osThreadJoin函数
  attr.cb_mem = NULL; //控制快的指针
  attr.cb_size = 0U;
  attr.stack_mem = NULL; //栈内存指针
  attr.stack_size = 1024 * 4; //栈大小
  attr.priority = 25; //优先级
  if (osThreadNew((osThreadFunc_t)iic, NULL, &attr) == NULL)
   {
     printf("Fail to create thread!\n");
   }
}

APP_FEATURE_INIT(iic_entry);