forked from xuos/xiuos
81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
/*
|
|
* Copyright (c) 2020 AIIT XUOS Lab
|
|
* XiUOS is licensed under Mulan PSL v2.
|
|
* You can use this software according to the terms and conditions of the Mulan PSL v2.
|
|
* You may obtain a copy of Mulan PSL v2 at:
|
|
* http://license.coscl.org.cn/MulanPSL2
|
|
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
|
|
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
|
|
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
|
|
* See the Mulan PSL v2 for more details.
|
|
*/
|
|
|
|
/**
|
|
* @file: test_i2c.c
|
|
* @brief: a application of i2c function
|
|
* @version: 1.1
|
|
* @author: AIIT XUOS Lab
|
|
* @date: 2022/12/17
|
|
*/
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <transform.h>
|
|
#include <sleep.h>
|
|
#ifdef ADD_XIZI_FEATURES
|
|
|
|
#define I2C_SLAVE_ADDRESS (0x44U)
|
|
|
|
void TestI2C(void)
|
|
{
|
|
// config IIC pin(SCL:34.SDA:35) in menuconfig
|
|
int iic_fd = PrivOpen(I2C_DEV_DRIVER, O_RDWR);
|
|
if (iic_fd < 0)
|
|
{
|
|
printf("open iic_fd fd error:%d\n", iic_fd);
|
|
return;
|
|
}
|
|
printf("IIC open successful!\n");
|
|
|
|
// init iic
|
|
uint16 iic_address = I2C_SLAVE_ADDRESS;
|
|
|
|
struct PrivIoctlCfg ioctl_cfg;
|
|
ioctl_cfg.ioctl_driver_type = I2C_TYPE;
|
|
ioctl_cfg.args = (void *)&iic_address;
|
|
|
|
if (0 != PrivIoctl(iic_fd, OPE_INT, &ioctl_cfg))
|
|
{
|
|
printf("ioctl iic fd error %d\n", iic_fd);
|
|
PrivClose(iic_fd);
|
|
return;
|
|
}
|
|
printf("IIC configure successful!\n");
|
|
|
|
// I2C read and write
|
|
uint8_t data[32];
|
|
|
|
while (1)
|
|
{
|
|
PrivWrite(iic_fd, NONE, 0);
|
|
msleep(40);
|
|
PrivRead(iic_fd, data, 4);
|
|
|
|
float result = ((data[2] << 8 | data[3]) >> 2) * 165.0 /( (1 << 14) - 1) - 40.0;
|
|
int temperature = result*10;
|
|
printf("Temperature : %d.%d ℃\n", temperature/10, temperature%10);
|
|
|
|
result = ((data[0] << 8 | data[1] ) & 0x3fff) * 100.0 / ( (1 << 14) - 1);
|
|
int humidity = result*10;
|
|
printf("Humidity : %d.%d %%RH\n", humidity/10, humidity%10);
|
|
|
|
printf("HS300X origin data1:0x%2x%2x%2x%2x\n", data[0],data[1],data[2],data[3]);
|
|
|
|
msleep(1000);
|
|
}
|
|
|
|
PrivClose(iic_fd);
|
|
return;
|
|
}
|
|
|
|
PRIV_SHELL_CMD_FUNCTION(TestI2C, a iic test sample, PRIV_SHELL_CMD_MAIN_ATTR);
|
|
#endif |