120 lines
2.5 KiB
C
120 lines
2.5 KiB
C
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#include <stdio.h>
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#include "ohos_init.h"
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#include "iot_gpio.h"
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#include "iot_gpio_ex.h"
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#include "iot_i2c.h"
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#include "cmsis_os2.h"
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#define IIC_SDA 0
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#define IIC_SCL 1
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#define ADDR 0x27 // 0100111
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#define IIC_IDX 1
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/*
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Command Register
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0 Input port 0
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1 Input port 1
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2 Output port 0
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3 Output port 1
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4 Polarity Inversion port 0
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5 Polarity Inversion port 1
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6 Configuration port 0
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7 Configuration port 1
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*/
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#define CMD_CFG0 6
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#define CMD_CFG1 7
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#define CMD_OUT0 2
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#define CMD_OUT1 3
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int write_iic(uint8_t* data){
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int ret = IoTI2cWrite(IIC_IDX, (ADDR << 1) | 0x00, data, 3);
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return ret;
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}
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//start
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uint8_t CFG0[] = {CMD_CFG0,0x0,0x0}; //配置为输出
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uint8_t CFG1[] = {CMD_CFG1,0x0,0x0}; //配置为输出
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uint8_t OUT0[] = {CMD_OUT0,0x00,0x00}; // 输出
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uint8_t OUT1[] = {CMD_OUT1,0x00,0x00}; // 输出
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char alpha[8][9] = {
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"11111111",
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"11100000",
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"11100000",
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"11111111",
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"11111111",
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"11100000",
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"11100000",
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"11111111"
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};
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void write_data(char byte1,char byte2){
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//printf("write %02x ,%02x\n",byte1,byte2);
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uint8_t data[3] = {CMD_OUT0,0x00,0x00};
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data[1] = byte1;
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data[2] = byte2;
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write_iic(data);
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data[0] = CMD_OUT1;
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write_iic(data);
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}
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void iic(void* args ){
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printf("iic thread running...");
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IoTGpioInit(IIC_SDA);
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IoTGpioInit(IIC_SCL);
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IoTGpioSetFunc(IIC_SDA, IOT_GPIO_FUNC_GPIO_0_I2C1_SDA);
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IoTGpioSetFunc(IIC_SCL, IOT_GPIO_FUNC_GPIO_1_I2C1_SCL);
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IoTI2cInit(IIC_IDX, 400000);
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write_iic(CFG0);
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write_iic(CFG1);
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usleep(200*1000);
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write_iic(OUT0);
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write_iic(OUT1);
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usleep(1000*1000);
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while(1){
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for(int i=0;i<8;i++){
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unsigned char hex = 0;
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for(int j=0;j<8;j++){
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hex = hex <<1;
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if(alpha[i][j] == '1'){
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hex = hex | 0x1;
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}
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}
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OUT1[2] = hex;
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OUT0[1] = ~(1 << i);
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write_data(~(1 << i),hex);
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}
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}
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printf("set finish!\n");
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}
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void iic_entry(){
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printf("iic_entry called \n");
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osThreadAttr_t attr;
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attr.name = "thread_iic";
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attr.attr_bits = 0U; // 如果为1 ，则可以使用osThreadJoin函数
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attr.cb_mem = NULL; //控制快的指针
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attr.cb_size = 0U;
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attr.stack_mem = NULL; //栈内存指针
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attr.stack_size = 1024 * 4; //栈大小
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attr.priority = 25; //优先级
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if (osThreadNew((osThreadFunc_t)iic, NULL, &attr) == NULL)
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{
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printf("Fail to create thread!\n");
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}
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}
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APP_FEATURE_INIT(iic_entry);
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