59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
/*================================================================
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Copyright (c) 2021, Quectel Wireless Solutions Co., Ltd. All rights reserved.
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Quectel Wireless Solutions Proprietary and Confidential.
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=================================================================*/
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/**
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******************************************************************************
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* @file example_iic.c
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* @author Paddy.li
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* @version V1.0.0
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* @date 2019/01/04
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* @brief This file tests IIC APIs
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******************************************************************************
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*/
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#include <stdio.h>
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#include "ql_rtos.h"
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#include "ql_application.h"
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#include "ql_iic.h"
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#define I2C_SLAVE_ADDR 0x1B //codec 5616
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#define WHO_AM_I 0x02
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#define WHO_AM_I_VALUE 0x12
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/*************************************************************************************
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ql_i2c_init函数中i2c_no与gpio对应关系如下：
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（不同项目开放的资源存在差异，请根据项目的引脚资源表再参照下面对应关系进行选择.）
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GPIO_NUM I2C_NO
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49-50 ----> 0
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10-11 ----> 1
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12-13 ----> 2
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25-26 ----> 4
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**************************************************************************************/
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static void quec_i2c_test(void * argv)
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{
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#if 1
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//EC600S:SCL gpio10, SDA gpio11 fun1
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unsigned char i2c_no = 1; //CI2C match to twsi1
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#else
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//EC100Y
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int i2c_no = 0; //CI2C match to twsi0
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#endif
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unsigned int iRet=0;
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unsigned int fastmode = 0;
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ql_i2c_init(i2c_no, fastmode);
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unsigned char wrtBuff[2] = {WHO_AM_I_VALUE, 0};
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unsigned char rdBuff[2] = {0, 0};
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iRet = ql_i2c_write(i2c_no, I2C_SLAVE_ADDR, WHO_AM_I, wrtBuff, 2);
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printf("< write i2c value=0x%x, iRet=%d >\n", WHO_AM_I_VALUE, iRet);
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iRet = ql_i2c_read(i2c_no, I2C_SLAVE_ADDR, WHO_AM_I, rdBuff, 2);
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printf("< read i2c iRet=%d, value=0x%x 0x%x >\n", iRet, rdBuff[1], rdBuff[0]);//Little endian
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}
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//application_init(quec_i2c_test, "quec_i2c_test", 2, 10);
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