1. 整個project的程式檔案目錄如下圖所示.
2. main.c
/***********************************************/#include "stm8s_003x.h"
#include "stm8s_type.h"
#include "i2c.h"
u8 ByteRead;
int main(void)
{
enableInterrupts(); //InterruptInit
I2C_Init();
I2C_Write(0xE0, 0xC5, 0x54);
ByteRead = I2C_ReadByte(0xE0, 0x10);
return 0;
}
/***********************************************/
3. i2c.c
/***********************************************/#include "stm8s_003x.h"
#include "stm8s_type.h"
#include "i2c.h"
void I2C_Init(void)
{
I2C->CR1 = 0x00; //Disable I2C
I2C->CR2 = 0x04; //Acknowledge enable
I2C->FREQR = 10; //Peripheral clock frequency = 1~24mHz
// I2C->OARH = 0x40; //Addressing mode = 10-bit slave address (7-bit address not acknowledged)
I2C->OARH = 0x00; //Addressing mode = 7-bit slave address (10-bit address not acknowledged)
I2C->OARL = 0x00; //Interface address
I2C->ITR = 0x00; //Interrupt register
I2C->CCRH = 0x80; //I2C master mode selection = Fast mode I2C
I2C->CCRL = 30; //Clock control register (Master mode)
I2C->CR1 = 0x01; //Enable I2C
}
void I2C_Write(u8 Addr, u8 Reg, u8 Data)
{
unsigned char Temp;
unsigned int i;
I2C->CR2 |= 0x01; //I2C Start Condition
while((I2C->SR1 & 0x01) == 0); //Start condition generated
I2C->DR = Addr; //Device address(write)
while((I2C->SR1 & 0x02) == 0); //Address sent
Temp = I2C->SR3; //Status register
I2C->DR = Reg; //Device register
while((I2C->SR1 & 0x80) == 0); //Data register empty (transmitters)
I2C->DR = Data; //Device data
while((I2C->SR1 & 0x80) == 0); //Data register empty (transmitters)
I2C->CR2 |= 0x02; //I2C Stop Condition
i = 0xFFFF;
while(i--);
}
u8 I2C_ReadByte(u8 Addr, u8 Reg)
{
unsigned char Temp, Byte_Read;
I2C->CR2 |= 0x01; //I2C Start Condition
while((I2C->SR1 & 0x01) == 0); //Start condition generated
I2C->DR = Addr; //Device address
while((I2C->SR1 & 0x02) == 0); //Address sent
Temp = I2C->SR3; //Status register
I2C->DR = Reg; //Device register
while((I2C->SR1 & 0x80) == 0); //Data register empty (transmitters)
I2C->CR2 |= 0x01; //I2C Start Condition
while((I2C->SR1 & 0x01) == 0); //Start condition generated
I2C->DR = (Addr | 0x01); //Device address(read)
while((I2C->SR1 & 0x02) == 0); //Address sent
Temp = I2C->SR3; //Status register
I2C->CR2 |= 0x02; //I2C Stop Condition
while((I2C->SR1 & 0x40) == 0); //Byte transfer finished
Byte_Read = 0x00; //Clean data
Byte_Read = I2C->DR;
return Byte_Read;
}
u16 I2C_ReadWord(u8 Addr, u8 Reg)
{
unsigned char Temp, HighByteRead, LowByteRead;
u16 WordRead;
I2C->CR2 |= 0x01; //I2C Start Condition
while((I2C->SR1 & 0x01) == 0); //Start condition generated
I2C->DR = Addr; //Device address
while((I2C->SR1 & 0x02) == 0); //Address sent
Temp = I2C->SR3; //Status register
I2C->DR = Reg; //Device register
while((I2C->SR1 & 0x80) == 0); //Data register empty (transmitters)
I2C->CR2 |= 0x01; //I2C Start Condition
while((I2C->SR1 & 0x01) == 0); //Start condition generated
I2C->DR = (Addr | 0x01); //Device address(read)
while((I2C->SR1 & 0x02) == 0); //Address sent
Temp = I2C->SR3; //Status register
I2C->CR2 |= 0x04; //I2C Ack Condition
while((I2C->SR1 & 0x40) == 0); //Byte transfer finished
HighByteRead = 0x00; //Clean data
HighByteRead = I2C->DR; //Byte 1
I2C->CR2 |= 0x02; //I2C Stop Condition
while((I2C->SR1 & 0x40) == 0); //Byte transfer finished
LowByteRead = 0x00; //Clean data
LowByteRead = I2C->DR; //Byte2
WordRead = (LowByteRead | (HighByteRead << 8));
return WordRead;
}
/***********************************************/
4. stm8_interrupt_vector.c
/***********************************************//* BASIC INTERRUPT VECTOR TABLE FOR STM8 devices
* Copyright (c) 2007 STMicroelectronics
*/
typedef void @far (*interrupt_handler_t)(void);
struct interrupt_vector {
unsigned char interrupt_instruction;
interrupt_handler_t interrupt_handler;
};
@far @interrupt void NonHandledInterrupt (void)
{
/* in order to detect unexpected events during development,
it is recommended to set a breakpoint on the following instruction
*/
return;
}
extern void _stext(); /* startup routine */
struct interrupt_vector const _vectab[] = {
{0x82, (interrupt_handler_t)_stext}, /* reset */
{0x82, NonHandledInterrupt}, /* trap */
{0x82, NonHandledInterrupt}, /* irq0 */
{0x82, NonHandledInterrupt}, /* irq1 */
{0x82, NonHandledInterrupt}, /* irq2 */
{0x82, NonHandledInterrupt}, /* irq3 */
{0x82, NonHandledInterrupt}, /* irq4 */
{0x82, NonHandledInterrupt}, /* irq5 */
{0x82, NonHandledInterrupt}, /* irq6 */
{0x82, NonHandledInterrupt}, /* irq7 */
{0x82, NonHandledInterrupt}, /* irq8 */
{0x82, NonHandledInterrupt}, /* irq9 */
{0x82, NonHandledInterrupt}, /* irq10 */
{0x82, NonHandledInterrupt}, /* irq11 */
{0x82, NonHandledInterrupt}, /* irq12 */
{0x82, NonHandledInterrupt}, /* irq13 */
{0x82, NonHandledInterrupt}, /* irq14 */
{0x82, NonHandledInterrupt}, /* irq15 */
{0x82, NonHandledInterrupt}, /* irq16 */
{0x82, NonHandledInterrupt}, /* irq17 */
{0x82, NonHandledInterrupt}, /* irq18 */
{0x82, NonHandledInterrupt}, /* irq19 */
{0x82, NonHandledInterrupt}, /* irq20 */
{0x82, NonHandledInterrupt}, /* irq21 */
{0x82, NonHandledInterrupt}, /* irq22 */
{0x82, NonHandledInterrupt}, /* irq23 */
{0x82, NonHandledInterrupt}, /* irq24 */
{0x82, NonHandledInterrupt}, /* irq25 */
{0x82, NonHandledInterrupt}, /* irq26 */
{0x82, NonHandledInterrupt}, /* irq27 */
{0x82, NonHandledInterrupt}, /* irq28 */
{0x82, NonHandledInterrupt}, /* irq29 */
};
/***********************************************/
5. i2c.h
/***********************************************/#include "stm8s_type.h"
void I2C_Init(void);
void I2C_Write(u8 Addr, u8 Reg, u8 Data);
u8 I2C_ReadByte(u8 Addr, u8 Reg);
u16 I2C_ReadWord(u8 Addr, u8 Reg);
/***********************************************/
6. stm8s_003x.h
/***********************************************//* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM8_003x_H
#define __STM8_003x_H
#include "stm8s_type.h"
/******************************************************************************/
/* Library configuration section */
/******************************************************************************/
/******************************************************************************/
/* Peripherals Base Address */
/******************************************************************************/
#define GPIOA_BaseAddress 0x5000
#define GPIOB_BaseAddress 0x5005
#define GPIOC_BaseAddress 0x500A
#define GPIOD_BaseAddress 0x500F
#define GPIOE_BaseAddress 0x5014
#define GPIOF_BaseAddress 0x5019
#define FLASH_BaseAddress 0x505A
#define ITC_BaseAddress 0x50A0
#define RST_BaseAddress 0x50B3
#define CLK_BaseAddress 0x50C3
#define WWDG_BaseAddress 0x50D1
#define IWDG_BaseAddress 0x50E0
#define AWU_BaseAddress 0x50F0
#define BEEP_BaseAddress 0x50F3
#define SPI_BaseAddress 0x5200
#define I2C_BaseAddress 0x5210
#define UART1_BaseAddress 0x5230
#define TIM1_BaseAddress 0x5250
#define TIM2_BaseAddress 0x5300
#define TIM4_BaseAddress 0x5340
#define ADC1_BaseAddress 0x53E0
/******************************************************************************/
/* Peripherals declarations */
/******************************************************************************/
#define GPIOA ((GPIO_TypeDef *) GPIOA_BaseAddress)
#define GPIOB ((GPIO_TypeDef *) GPIOB_BaseAddress)
#define GPIOC ((GPIO_TypeDef *) GPIOC_BaseAddress)
#define GPIOD ((GPIO_TypeDef *) GPIOD_BaseAddress)
#define GPIOE ((GPIO_TypeDef *) GPIOE_BaseAddress)
#define GPIOF ((GPIO_TypeDef *) GPIOF_BaseAddress)
#define FLASH ((FLASH_TypeDef *) FLASH_BaseAddress)
#define ITC ((ITC_TypeDef *) ITC_BaseAddress)
#define RST ((RST_TypeDef *) RST_BaseAddress)
#define CLK ((CLK_TypeDef *) CLK_BaseAddress)
#define WWDG ((WWDG_TypeDef *) WWDG_BaseAddress)
#define IWDG ((IWDG_TypeDef *) IWDG_BaseAddress)
#define AWU ((AWU_TypeDef *) AWU_BaseAddress)
#define BEEP ((BEEP_TypeDef *) BEEP_BaseAddress)
#define SPI ((SPI_TypeDef *) SPI_BaseAddress)
#define I2C ((I2C_TypeDef *) I2C_BaseAddress)
#define UART1 ((UART1_TypeDef *) UART1_BaseAddress)
#define TIM1 ((TIM1_TypeDef *) TIM1_BaseAddress)
#define TIM2 ((TIM2_TypeDef *) TIM2_BaseAddress)
#define TIM4 ((TIM4_TypeDef *) TIM4_BaseAddress)
#define ADC1 ((ADC1_TypeDef *) ADC1_BaseAddress)
/******************************************************************************/
/* IP registers structures */
/******************************************************************************/
#define enableInterrupts() {_asm("rim\n");} /* enable interrupts */
#define disableInterrupts() {_asm("sim\n");} /* disable interrupts */
/* @brief Inter-Integrated Circuit (I2C) */
typedef struct I2C_struct
{
vu8 CR1; /*!< I2C control register 1 */
vu8 CR2; /*!< I2C control register 2 */
vu8 FREQR; /*!< I2C frequency register */
vu8 OARL; /*!< I2C own address register LSB */
vu8 OARH; /*!< I2C own address register MSB */
vu8 RESERVED1; /*!< Reserved byte */
vu8 DR; /*!< I2C data register */
vu8 SR1; /*!< I2C status register 1 */
vu8 SR2; /*!< I2C status register 2 */
vu8 SR3; /*!< I2C status register 3 */
vu8 ITR; /*!< I2C interrupt register */
vu8 CCRL; /*!< I2C clock control register low */
vu8 CCRH; /*!< I2C clock control register high */
vu8 TRISER; /*!< I2C maximum rise time register */
vu8 PECR; /*!< I2C packet error checking register */
}I2C_TypeDef;
#endif /* __STM8S_003x_H */
/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
7. stm8s_type.h
/***********************************************//**
******************************************************************************
* @file stm8s_type.h
* @brief This file contains all common data types.
* @author STMicroelectronics - MCD Application Team
* @version V1.1.1
* @date 06/05/2009
******************************************************************************
*
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*
* <h2><center>© COPYRIGHT 2009 STMicroelectronics</center></h2>
* @image html logo.bmp
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM8S_TYPE_H
#define __STM8S_TYPE_H
/* Includes ------------------------------------------------------------------*/
/* Exported types ------------------------------------------------------------*/
typedef signed long s32;
typedef signed short s16;
typedef signed char s8;
typedef signed long const sc32; /* Read Only */
typedef signed short const sc16; /* Read Only */
typedef signed char const sc8; /* Read Only */
typedef volatile signed long vs32;
typedef volatile signed short vs16;
typedef volatile signed char vs8;
typedef volatile signed long const vsc32; /* Read Only */
typedef volatile signed short const vsc16; /* Read Only */
typedef volatile signed char const vsc8; /* Read Only */
typedef unsigned long u32;
typedef unsigned short u16;
typedef unsigned char u8;
typedef unsigned long const uc32; /* Read Only */
typedef unsigned short const uc16; /* Read Only */
typedef unsigned char const uc8; /* Read Only */
typedef volatile unsigned long vu32;
typedef volatile unsigned short vu16;
typedef volatile unsigned char vu8;
typedef volatile unsigned long const vuc32; /* Read Only */
typedef volatile unsigned short const vuc16; /* Read Only */
typedef volatile unsigned char const vuc8; /* Read Only */
typedef enum
{
FALSE = 0,
TRUE = !FALSE
}bool;
typedef enum
{
RESET = 0,
SET = !RESET
}FlagStatus, ITStatus, BitStatus;
typedef enum
{
DISABLE = 0,
ENABLE = !DISABLE
}FunctionalState;
#define IS_FUNCTIONALSTATE_OK(VALUE) ( (VALUE == ENABLE) || (VALUE == DISABLE) )
typedef enum
{
ERROR = 0,
SUCCESS = !ERROR
}ErrorStatus;
#define U8_MAX ((u8)255)
#define S8_MAX ((s8)127)
#define S8_MIN ((s8)-128)
#define U16_MAX ((u16)65535u)
#define S16_MAX ((s16)32767)
#define S16_MIN ((s16)-32768)
#define U32_MAX ((u32)4294967295uL)
#define S32_MAX ((s32)2147483647)
#define S32_MIN ((s32)-2147483648)
/* Exported constants --------------------------------------------------------*/
/* Exported macro ------------------------------------------------------------*/
/* Exported functions ------------------------------------------------------- */
#endif /* __STM8S_TYPE_H */
/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/
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