118 lines
2.3 KiB
C
118 lines
2.3 KiB
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);
|