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STM32H750XB_RT-THREAD/28-电容触摸屏—触摸画板（兼容屏幕版本）/User/touch/bsp_i2c_touch.c

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STM32H750 RTThread 例程
2025-07-21 06:34:29 +00:00
/**
******************************************************************************
* @file bsp_i2c_ee.c
* @author STMicroelectronics
* @version V1.0
* @date 2016-xx-xx
* @brief <EFBFBD><EFBFBD><EFBFBD>ݴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ר<EFBFBD><EFBFBD>iic<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
******************************************************************************
* @attention
*
* ʵ<EFBFBD><EFBFBD>ƽ̨:Ұ<EFBFBD><EFBFBD> STM32 H750 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD>̳ :http://www.firebbs.cn
* <EFBFBD>Ա<EFBFBD> :http://firestm32.taobao.com
*
******************************************************************************
*/
#include "./touch/bsp_i2c_touch.h"
#include "./touch/bsp_touch_gtxx.h"
#include "./usart/bsp_debug_usart.h"
#include "./delay/core_delay.h"
/* STM32 I2C <20><><EFBFBD><EFBFBD>ģʽ */
#define I2C_Speed 400000
/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַֻҪ<D6BB><D2AA>STM32<33><32><EFBFBD>ҵ<EFBFBD>I2C<32><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
#define I2C_OWN_ADDRESS7 0x0A
I2C_HandleTypeDef I2C_Handle;
static void Delay(__IO uint32_t nCount) //<2F>򵥵<EFBFBD><F2B5A5B5><EFBFBD>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD>
{
for(; nCount != 0; nCount--);
}
/**
* @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD> PB7 Ϊ<EFBFBD><EFBFBD><EFBFBD>жϿڣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȼ<EFBFBD>
* @param <EFBFBD><EFBFBD>
* @retval <EFBFBD><EFBFBD>
*/
void I2C_GTP_IRQEnable(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/*<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>GPIO<49>ڵ<EFBFBD>ʱ<EFBFBD><CAB1>*/
GTP_INT_GPIO_CLK_ENABLE();
/* ѡ<><D1A1><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD> */
GPIO_InitStructure.Pin = GTP_INT_GPIO_PIN;
/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>ģʽ */
GPIO_InitStructure.Mode = GPIO_MODE_IT_RISING;
/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ų<EFBFBD><C5B2><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
GPIO_InitStructure.Pull = GPIO_NOPULL;
/* ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ľṹ<C4BD><E1B9B9><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
HAL_GPIO_Init(GTP_INT_GPIO_PORT, &GPIO_InitStructure);
/* <20><><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD>ȼ<EFBFBD> */
HAL_NVIC_SetPriority(GTP_INT_EXTI_IRQ, 1, 1);
/* ʹ<><CAB9><EFBFBD>ж<EFBFBD> */
HAL_NVIC_EnableIRQ(GTP_INT_EXTI_IRQ);
}
/**
* @brief <EFBFBD>رմ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD>
* @param <EFBFBD><EFBFBD>
* @retval <EFBFBD><EFBFBD>
*/
void I2C_GTP_IRQDisable(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/*<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>GPIO<49>ڵ<EFBFBD>ʱ<EFBFBD><CAB1>*/
GTP_INT_GPIO_CLK_ENABLE();
/* ѡ<><D1A1><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD> */
GPIO_InitStructure.Pin = GTP_INT_GPIO_PIN;
/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD>ģʽ */
GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ų<EFBFBD><C5B2><EFBFBD><EFBFBD><EFBFBD>Ҳ<EFBFBD><D2B2><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
GPIO_InitStructure.Pull = GPIO_NOPULL;
/* ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ľṹ<C4BD><E1B9B9><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
HAL_GPIO_Init(GTP_INT_GPIO_PORT, &GPIO_InitStructure);
/* <20><><EFBFBD><EFBFBD><EFBFBD>ж<EFBFBD><D0B6><EFBFBD><EFBFBD>ȼ<EFBFBD> */
HAL_NVIC_SetPriority(GTP_INT_EXTI_IRQ, 1, 1);
/* ʹ<><CAB9><EFBFBD>ж<EFBFBD> */
HAL_NVIC_DisableIRQ(GTP_INT_EXTI_IRQ);
}
/**
* @brief <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> I/O<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param <EFBFBD><EFBFBD>
* @retval <EFBFBD><EFBFBD>
*/
static void I2C_GPIO_Config(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/*ʹ<><CAB9>I2Cʱ<43><CAB1> */
GTP_I2C_CLK_ENABLE();
/*ʹ<>ܴ<EFBFBD><DCB4><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>õ<EFBFBD><C3B5><EFBFBD><EFBFBD>ŵ<EFBFBD>ʱ<EFBFBD><CAB1>*/
GTP_I2C_SCL_GPIO_CLK_ENABLE();
GTP_I2C_SDA_GPIO_CLK_ENABLE();
GTP_INT_GPIO_CLK_ENABLE();
GTP_RST_GPIO_CLK_ENABLE();
#if !(SOFT_IIC) //ʹ<><CAB9>Ӳ<EFBFBD><D3B2>IIC
/*<2A><><EFBFBD><EFBFBD>SDA<44><41><EFBFBD><EFBFBD> */
GPIO_InitStructure.Pin = GTP_I2C_SCL_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_AF_OD;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStructure.Pull = GPIO_NOPULL;
GPIO_InitStructure.Alternate = GTP_I2C_SCL_AF;
HAL_GPIO_Init(GTP_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);
/*<2A><><EFBFBD><EFBFBD>SCL<43><4C><EFBFBD><EFBFBD> */
GPIO_InitStructure.Pin = GTP_I2C_SDA_PIN;
HAL_GPIO_Init(GTP_I2C_SDA_GPIO_PORT, &GPIO_InitStructure);
#else //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>IIC
/*<2A><><EFBFBD><EFBFBD>SCL<43><4C><EFBFBD><EFBFBD> */
GPIO_InitStructure.Pin = GTP_I2C_SCL_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_OD;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStructure.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GTP_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);
/*<2A><><EFBFBD><EFBFBD>SDA<44><41><EFBFBD><EFBFBD> */
GPIO_InitStructure.Pin = GTP_I2C_SDA_PIN;
HAL_GPIO_Init(GTP_I2C_SCL_GPIO_PORT, &GPIO_InitStructure);
#endif
/*<2A><><EFBFBD><EFBFBD>RST<53><54><EFBFBD>ţ<EFBFBD><C5A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
GPIO_InitStructure.Pin = GTP_RST_GPIO_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStructure.Pull = GPIO_PULLDOWN;
HAL_GPIO_Init(GTP_RST_GPIO_PORT, &GPIO_InitStructure);
/*<2A><><EFBFBD><EFBFBD> INT<4E><54><EFBFBD>ţ<EFBFBD><C5A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC> */
GPIO_InitStructure.Pin = GTP_INT_GPIO_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
//<2F><><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>
GPIO_InitStructure.Pull = GPIO_PULLDOWN;
HAL_GPIO_Init(GTP_INT_GPIO_PORT, &GPIO_InitStructure);
}
/**
* @brief <EFBFBD><EFBFBD>GT91xxоƬ<EFBFBD><EFBFBD><EFBFBD>и<EFBFBD>λ
* @param <EFBFBD><EFBFBD>
* @retval <EFBFBD><EFBFBD>
*/
void I2C_ResetChip(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
/*<2A><><EFBFBD><EFBFBD> INT<4E><54><EFBFBD>ţ<EFBFBD><C5A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC> */
GPIO_InitStructure.Pin = GTP_INT_GPIO_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_OUTPUT_PP;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStructure.Pull = GPIO_PULLDOWN; //<2F><><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼ<EFBFBD><CABC>
HAL_GPIO_Init(GTP_INT_GPIO_PORT, &GPIO_InitStructure);
/*<2A><>ʼ<EFBFBD><CABC>GT9157,rstΪ<74>ߵ<EFBFBD>ƽ<EFBFBD><C6BD>intΪ<74>͵<EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD>gt9157<35><37><EFBFBD>豸<EFBFBD><E8B1B8>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ0xBA*/
/*<2A><>λΪ<CEBB>͵<EFBFBD>ƽ<EFBFBD><C6BD>Ϊ<EFBFBD><CEAA>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>׼<EFBFBD><D7BC>*/
HAL_GPIO_WritePin (GTP_RST_GPIO_PORT,GTP_RST_GPIO_PIN,GPIO_PIN_RESET);
CPU_TS_Tmr_Delay_US(10);
/*<2A><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ʱ<EFBFBD>䣬<EFBFBD><E4A3AC><EFBFBD>г<EFBFBD>ʼ<EFBFBD><CABC>*/
HAL_GPIO_WritePin (GTP_RST_GPIO_PORT,GTP_RST_GPIO_PIN,GPIO_PIN_SET);
HAL_Delay(20);
/*<2A><>ʼ<EFBFBD><CABC>GT9157,rstΪ<74>ߵ<EFBFBD>ƽ<EFBFBD><C6BD>intΪ<74>͵<EFBFBD>ƽ<EFBFBD><C6BD><EFBFBD><EFBFBD>gt9157<35><37><EFBFBD>豸<EFBFBD><E8B1B8>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ0xBA*/
// /*<2A><>λΪ<CEBB>͵<EFBFBD>ƽ<EFBFBD><C6BD>Ϊ<EFBFBD><CEAA>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD>׼<EFBFBD><D7BC>*/
// HAL_GPIO_WritePin (GTP_RST_GPIO_PORT,GTP_RST_GPIO_PIN,GPIO_PIN_RESET);
// Delay(0x0FFFF);
// /*<2A><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ʱ<EFBFBD>䣬<EFBFBD><E4A3AC><EFBFBD>г<EFBFBD>ʼ<EFBFBD><CABC>*/
// HAL_GPIO_WritePin (GTP_RST_GPIO_PORT,GTP_RST_GPIO_PIN,GPIO_PIN_SET);
// Delay(0x0FFFF);
/*<2A><>INT<4E><54><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ<EFBFBD><CEAA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ<C4A3><CABD><EFBFBD>Ա<EFBFBD><D4B1><EFBFBD><EFBFBD>մ<EFBFBD><D5B4><EFBFBD><EFBFBD>ж<EFBFBD><D0B6>ź<EFBFBD>*/
GPIO_InitStructure.Pin = GTP_INT_GPIO_PIN;
GPIO_InitStructure.Mode = GPIO_MODE_INPUT;
GPIO_InitStructure.Speed = GPIO_SPEED_FREQ_HIGH;
GPIO_InitStructure.Pull = GPIO_NOPULL;
HAL_GPIO_Init(GTP_INT_GPIO_PORT, &GPIO_InitStructure);
}
/**
* @brief I2C <EFBFBD><EFBFBD><EFBFBD><EFBFBD>ģʽ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param <EFBFBD><EFBFBD>
* @retval <EFBFBD><EFBFBD>
*/
static void I2C_Mode_Config(void)
{
/* I2C <20><><EFBFBD><EFBFBD> */
I2C_Handle.Instance = GTP_I2C;
I2C_Handle.Init.Timing = 0x90913232;//50KHz
I2C_Handle.Init.OwnAddress1 = 0;
I2C_Handle.Init.AddressingMode = I2C_ADDRESSINGMODE_7BIT;
I2C_Handle.Init.DualAddressMode = I2C_DUALADDRESS_DISABLE;
I2C_Handle.Init.OwnAddress2 = 0;
I2C_Handle.Init.OwnAddress2Masks = I2C_OA2_NOMASK;
I2C_Handle.Init.GeneralCallMode = I2C_GENERALCALL_DISABLE;
I2C_Handle.Init.NoStretchMode = I2C_NOSTRETCH_DISABLE;
/* Init the I2C */
HAL_I2C_Init(&I2C_Handle);
HAL_I2CEx_AnalogFilter_Config(&I2C_Handle, I2C_ANALOGFILTER_ENABLE);
}
/**
* @brief I2C <EFBFBD><EFBFBD><EFBFBD><EFBFBD>(GT91xx)<EFBFBD><EFBFBD>ʼ<EFBFBD><EFBFBD>
* @param <EFBFBD><EFBFBD>
* @retval <EFBFBD><EFBFBD>
*/
void I2C_Touch_Init(void)
{
I2C_GPIO_Config();
#if !(SOFT_IIC) //Ӳ<><D3B2>IICģʽ
I2C_Mode_Config();
#endif
I2C_ResetChip();
GTP_IRQ_Disable();
}
#if !(SOFT_IIC) //ʹ<><CAB9>Ӳ<EFBFBD><D3B2>IIC
__IO uint32_t I2CTimeout = I2CT_LONG_TIMEOUT;
/**
* @brief ʹ<EFBFBD><EFBFBD>IIC<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param
* @arg ClientAddr:<EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD>ַ
* @arg pBuffer:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɴӻ<EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵĻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>
* @arg NumByteToRead:<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݳ<EFBFBD><EFBFBD><EFBFBD>
* @retval <EFBFBD><EFBFBD>
*/
uint32_t I2C_ReadBytes(uint8_t ClientAddr,uint8_t* pBuffer, uint16_t NumByteToRead)
{
HAL_I2C_Master_Receive(&I2C_Handle,ClientAddr,pBuffer,NumByteToRead,1000);
return 0;
}
/**
* @brief ʹ<EFBFBD><EFBFBD>IICд<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param
* @arg ClientAddr:<EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD>ַ
* @arg pBuffer:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>
* @arg NumByteToWrite:д<EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><EFBFBD><EFBFBD>
* @retval <EFBFBD><EFBFBD>
*/
uint32_t I2C_WriteBytes(uint8_t ClientAddr,uint8_t* pBuffer, uint8_t NumByteToWrite)
{
HAL_I2C_Master_Transmit(&I2C_Handle,ClientAddr,pBuffer,NumByteToWrite,1000);
return 0;
}
#else //ʹ<><CAB9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>IIC
/*
*********************************************************************************************************
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>: i2c_Delay
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD>: I2C<EFBFBD><EFBFBD><EFBFBD><EFBFBD>λ<EFBFBD>ӳ٣<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>400KHz
* <EFBFBD><EFBFBD> <EFBFBD>Σ<EFBFBD><EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> ֵ: <EFBFBD><EFBFBD>
*********************************************************************************************************
*/
static void i2c_Delay(void)
{
uint8_t i;
/*<2A><>
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ͨ<EFBFBD><EFBFBD><EFBFBD>߼<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Dz<EFBFBD><EFBFBD>Եõ<EFBFBD><EFBFBD>ġ<EFBFBD>
<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>CPU<EFBFBD><EFBFBD>Ƶ180MHz <EFBFBD><EFBFBD>MDK<EFBFBD><EFBFBD><EFBFBD>뻷<EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD><EFBFBD><EFBFBD>Ż<EFBFBD>
ѭ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ50ʱ<EFBFBD><EFBFBD>SCLƵ<EFBFBD><EFBFBD> = 333KHz
ѭ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ30ʱ<EFBFBD><EFBFBD>SCLƵ<EFBFBD><EFBFBD> = 533KHz<EFBFBD><EFBFBD>
ѭ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ20ʱ<EFBFBD><EFBFBD>SCLƵ<EFBFBD><EFBFBD> = 727KHz<EFBFBD><EFBFBD>
*/
for (i = 0; i < 10*8; i++);
}
/*
*********************************************************************************************************
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>: i2c_Start
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD>: CPU<EFBFBD><EFBFBD><EFBFBD><EFBFBD>I2C<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ź<EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD>Σ<EFBFBD><EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> ֵ: <EFBFBD><EFBFBD>
*********************************************************************************************************
*/
void i2c_Start(void)
{
/* <20><>SCL<43>ߵ<EFBFBD>ƽʱ<C6BD><CAB1>SDA<44><41><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ر<EFBFBD>ʾI2C<32><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ź<EFBFBD> */
I2C_SDA_1();
I2C_SCL_1();
i2c_Delay();
I2C_SDA_0();
i2c_Delay();
I2C_SCL_0();
i2c_Delay();
}
/*
*********************************************************************************************************
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>: i2c_Start
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD>: CPU<EFBFBD><EFBFBD><EFBFBD><EFBFBD>I2C<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֹͣ<EFBFBD>ź<EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD>Σ<EFBFBD><EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> ֵ: <EFBFBD><EFBFBD>
*********************************************************************************************************
*/
void i2c_Stop(void)
{
/* <20><>SCL<43>ߵ<EFBFBD>ƽʱ<C6BD><CAB1>SDA<44><41><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ر<EFBFBD>ʾI2C<32><43><EFBFBD><EFBFBD>ֹͣ<CDA3>ź<EFBFBD> */
I2C_SDA_0();
I2C_SCL_1();
i2c_Delay();
I2C_SDA_1();
}
/*
*********************************************************************************************************
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>: i2c_SendByte
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD>: CPU<EFBFBD><EFBFBD>I2C<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD><EFBFBD><EFBFBD>8bit<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD>Σ<EFBFBD>_ucByte <EFBFBD><EFBFBD> <EFBFBD>ȴ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>͵<EFBFBD><EFBFBD>ֽ<EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> ֵ: <EFBFBD><EFBFBD>
*********************************************************************************************************
*/
void i2c_SendByte(uint8_t _ucByte)
{
uint8_t i;
/* <20>ȷ<EFBFBD><C8B7><EFBFBD><EFBFBD>ֽڵĸ<DAB5>λbit7 */
for (i = 0; i < 8; i++)
{
if (_ucByte & 0x80)
{
I2C_SDA_1();
}
else
{
I2C_SDA_0();
}
i2c_Delay();
I2C_SCL_1();
i2c_Delay();
I2C_SCL_0();
if (i == 7)
{
I2C_SDA_1(); // <20>ͷ<EFBFBD><CDB7><EFBFBD><EFBFBD><EFBFBD>
}
_ucByte <<= 1; /* <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>bit */
i2c_Delay();
}
}
/*
*********************************************************************************************************
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>: i2c_ReadByte
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD>: CPU<EFBFBD><EFBFBD>I2C<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD>ȡ8bit<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD>Σ<EFBFBD><EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> ֵ: <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
*********************************************************************************************************
*/
uint8_t i2c_ReadByte(void)
{
uint8_t i;
uint8_t value;
/* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD><31>bitΪ<74><CEAA><EFBFBD>ݵ<EFBFBD>bit7 */
value = 0;
for (i = 0; i < 8; i++)
{
value <<= 1;
I2C_SCL_1();
i2c_Delay();
if (I2C_SDA_READ())
{
value++;
}
I2C_SCL_0();
i2c_Delay();
}
return value;
}
/*
*********************************************************************************************************
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>: i2c_WaitAck
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD>: CPU<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>ʱ<EFBFBD>ӣ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ACKӦ<EFBFBD><EFBFBD><EFBFBD>ź<EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD>Σ<EFBFBD><EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> ֵ: <EFBFBD><EFBFBD><EFBFBD><EFBFBD>0<EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD>ȷӦ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD><EFBFBD>ʾ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ
*********************************************************************************************************
*/
uint8_t i2c_WaitAck(void)
{
uint8_t re;
I2C_SDA_1(); /* CPU<50>ͷ<EFBFBD>SDA<44><41><EFBFBD><EFBFBD> */
i2c_Delay();
I2C_SCL_1(); /* CPU<50><55><EFBFBD><EFBFBD>SCL = 1, <20><>ʱ<EFBFBD><CAB1><EFBFBD><EFBFBD><EFBFBD>᷵<EFBFBD><E1B7B5>ACKӦ<4B><D3A6> */
i2c_Delay();
if (I2C_SDA_READ()) /* CPU<50><55>ȡSDA<44><41><EFBFBD><EFBFBD>״̬ */
{
re = 1;
}
else
{
re = 0;
}
I2C_SCL_0();
i2c_Delay();
return re;
}
/*
*********************************************************************************************************
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>: i2c_Ack
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD>: CPU<EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><EFBFBD>ACK<EFBFBD>ź<EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD>Σ<EFBFBD><EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> ֵ: <EFBFBD><EFBFBD>
*********************************************************************************************************
*/
void i2c_Ack(void)
{
I2C_SDA_0(); /* CPU<50><55><EFBFBD><EFBFBD>SDA = 0 */
i2c_Delay();
I2C_SCL_1(); /* CPU<50><55><EFBFBD><EFBFBD>1<EFBFBD><31>ʱ<EFBFBD><CAB1> */
i2c_Delay();
I2C_SCL_0();
i2c_Delay();
I2C_SDA_1(); /* CPU<50>ͷ<EFBFBD>SDA<44><41><EFBFBD><EFBFBD> */
}
/*
*********************************************************************************************************
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD>: i2c_NAck
* <EFBFBD><EFBFBD><EFBFBD><EFBFBD>˵<EFBFBD><EFBFBD>: CPU<EFBFBD><EFBFBD><EFBFBD><EFBFBD>1<EFBFBD><EFBFBD>NACK<EFBFBD>ź<EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD>Σ<EFBFBD><EFBFBD><EFBFBD>
* <EFBFBD><EFBFBD> <EFBFBD><EFBFBD> ֵ: <EFBFBD><EFBFBD>
*********************************************************************************************************
*/
void i2c_NAck(void)
{
I2C_SDA_1(); /* CPU<50><55><EFBFBD><EFBFBD>SDA = 1 */
i2c_Delay();
I2C_SCL_1(); /* CPU<50><55><EFBFBD><EFBFBD>1<EFBFBD><31>ʱ<EFBFBD><CAB1> */
i2c_Delay();
I2C_SCL_0();
i2c_Delay();
}
#define I2C_DIR_WR 0 /* д<><D0B4><EFBFBD><EFBFBD>bit */
#define I2C_DIR_RD 1 /* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>bit */
/**
* @brief ʹ<EFBFBD><EFBFBD>IIC<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param
* @arg ClientAddr:<EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD>ַ
* @arg pBuffer:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɴӻ<EFBFBD><EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݵĻ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>
* @arg NumByteToRead:<EFBFBD><EFBFBD>ȡ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݳ<EFBFBD><EFBFBD><EFBFBD>
* @retval <EFBFBD><EFBFBD>
*/
uint32_t I2C_ReadBytes(uint8_t ClientAddr,uint8_t* pBuffer, uint16_t NumByteToRead)
{
/* <20><>1<EFBFBD><31><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>I2C<32><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ź<EFBFBD> */
i2c_Start();
/* <20><>2<EFBFBD><32><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֽڣ<D6BD><DAA3><EFBFBD>7bit<69>ǵ<EFBFBD>ַ<EFBFBD><D6B7>bit0<74>Ƕ<EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>λ<EFBFBD><CEBB>0<EFBFBD><30>ʾд<CABE><D0B4>1<EFBFBD><31>ʾ<EFBFBD><CABE> */
i2c_SendByte(ClientAddr | I2C_DIR_RD); /* <20>˴<EFBFBD><CBB4>Ƕ<EFBFBD>ָ<EFBFBD><D6B8> */
/* <20><>3<EFBFBD><33><EFBFBD><EFBFBD><EFBFBD>ȴ<EFBFBD>ACK */
if (i2c_WaitAck() != 0)
{
goto cmd_fail; /* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6> */
}
while(NumByteToRead)
{
*pBuffer = i2c_ReadByte();
/* <20><>ָ<EFBFBD><D6B8><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
pBuffer++;
/*<2A><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Լ<EFBFBD> */
NumByteToRead--;
if(NumByteToRead == 0)
i2c_NAck(); /* <20><><EFBFBD><EFBFBD>1<EFBFBD><31><EFBFBD>ֽڶ<D6BD><DAB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>CPU<50><55><EFBFBD><EFBFBD>NACK<43>ź<EFBFBD>(<28><><EFBFBD><EFBFBD>SDA = 1) */
else
i2c_Ack(); /* <20>м<EFBFBD><D0BC>ֽڶ<D6BD><DAB6><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>CPU<50><55><EFBFBD><EFBFBD>ACK<43>ź<EFBFBD>(<28><><EFBFBD><EFBFBD>SDA = 0) */
}
/* <20><><EFBFBD><EFBFBD>I2C<32><43><EFBFBD><EFBFBD>ֹͣ<CDA3>ź<EFBFBD> */
i2c_Stop();
return 0; /* ִ<>гɹ<D0B3> */
cmd_fail: /* <20><><EFBFBD><EFBFBD>ִ<EFBFBD><D6B4>ʧ<EFBFBD>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD>мǷ<D0BC><C7B7><EFBFBD>ֹͣ<CDA3>źţ<C5BA><C5A3><EFBFBD><EFBFBD><EFBFBD>Ӱ<EFBFBD><D3B0>I2C<32><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸 */
/* <20><><EFBFBD><EFBFBD>I2C<32><43><EFBFBD><EFBFBD>ֹͣ<CDA3>ź<EFBFBD> */
i2c_Stop();
return 1;
}
/**
* @brief ʹ<EFBFBD><EFBFBD>IICд<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
* @param
* @arg ClientAddr:<EFBFBD><EFBFBD><EFBFBD>豸<EFBFBD><EFBFBD>ַ
* @arg pBuffer:<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ָ<EFBFBD><EFBFBD>
* @arg NumByteToWrite:д<EFBFBD><EFBFBD><EFBFBD>ֽ<EFBFBD><EFBFBD><EFBFBD>
* @retval <EFBFBD><EFBFBD>
*/
uint32_t I2C_WriteBytes(uint8_t ClientAddr,uint8_t* pBuffer, uint8_t NumByteToWrite)
{
uint16_t m;
/*<2A><><EFBFBD><EFBFBD>0<EFBFBD><30><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֹͣ<CDA3>źţ<C5BA><C5A3><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ڲ<EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>*/
i2c_Stop();
/* ͨ<><CDA8><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6><EFBFBD>ķ<EFBFBD>ʽ<EFBFBD><CABD><EFBFBD>ж<EFBFBD><D0B6>ڲ<EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD><EFBFBD><EFBFBD>, һ<><D2BB>С<EFBFBD><D0A1> 10ms
CLKƵ<EFBFBD><EFBFBD>Ϊ200KHzʱ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ѯ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ϊ30<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
*/
for (m = 0; m < 1000; m++)
{
/* <20><>1<EFBFBD><31><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>I2C<32><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ź<EFBFBD> */
i2c_Start();
/* <20><>2<EFBFBD><32><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֽڣ<D6BD><DAA3><EFBFBD>7bit<69>ǵ<EFBFBD>ַ<EFBFBD><D6B7>bit0<74>Ƕ<EFBFBD>д<EFBFBD><D0B4><EFBFBD><EFBFBD>λ<EFBFBD><CEBB>0<EFBFBD><30>ʾд<CABE><D0B4>1<EFBFBD><31>ʾ<EFBFBD><CABE> */
i2c_SendByte(ClientAddr | I2C_DIR_WR); /* <20>˴<EFBFBD><CBB4><EFBFBD>дָ<D0B4><D6B8> */
/* <20><>3<EFBFBD><33><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ʱ<EFBFBD>ӣ<EFBFBD><D3A3>ж<EFBFBD><D0B6><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ƿ<EFBFBD><C7B7><EFBFBD>ȷӦ<C8B7><D3A6> */
if (i2c_WaitAck() == 0)
{
break;
}
}
if (m == 1000)
{
goto cmd_fail; /* EEPROM<4F><4D><EFBFBD><EFBFBD>д<EFBFBD><D0B4>ʱ */
}
while(NumByteToWrite--)
{
/* <20><>4<EFBFBD><34><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʼд<CABC><D0B4><EFBFBD><EFBFBD><EFBFBD><EFBFBD> */
i2c_SendByte(*pBuffer);
/* <20><>5<EFBFBD><35><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ACK */
if (i2c_WaitAck() != 0)
{
goto cmd_fail; /* <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6> */
}
pBuffer++; /* <20><>ַ<EFBFBD><D6B7>1 */
}
/* <20><><EFBFBD><EFBFBD>ִ<EFBFBD>гɹ<D0B3><C9B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>I2C<32><43><EFBFBD><EFBFBD>ֹͣ<CDA3>ź<EFBFBD> */
i2c_Stop();
return 0;
cmd_fail: /* <20><><EFBFBD><EFBFBD>ִ<EFBFBD><D6B4>ʧ<EFBFBD>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD>мǷ<D0BC><C7B7><EFBFBD>ֹͣ<CDA3>źţ<C5BA><C5A3><EFBFBD><EFBFBD><EFBFBD>Ӱ<EFBFBD><D3B0>I2C<32><43><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸 */
/* <20><><EFBFBD><EFBFBD>I2C<32><43><EFBFBD><EFBFBD>ֹͣ<CDA3>ź<EFBFBD> */
i2c_Stop();
return 1;
}
#endif
/*********************************************END OF FILE**********************/
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