esea_info
/
MyStm32Code
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

bsp_i2c_soft update

Browse Source
develop
esea_info 2 years ago
parent a7079b7124
commit 7ce92a9ae6
2 changed files with 153 additions and 47 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 76
      device/Inc/bsp_i2c_soft.h
  2. 124
      device/Src/bsp_i2c_soft.c

76
bsp/Inc/bsp_i2c_soft.h → device/Inc/bsp_i2c_soft.h
Unescape View File

@ -9,6 +9,8 @@
// #define SDA_GPIO_PORT GPIOB
// #define SDA_PIN GPIO_PIN_7
#define I2C_WRITE (0x00)
#define I2C_READ (0x01)
typedef enum {
IIC_OK = 0x00, //IIC工作正常
@ -17,15 +19,38 @@ typedef enum {
IIC_READ_ERR = 0x04 //从slave设备读取错误
} IIC_STATUS;
typedef enum
{
I2C_SW_Standard_Mode = 100 * 1000,
I2C_SW_Fast_Mode = 400 * 1000,
I2C_SW_Fast_Mode_Plus = 1000 * 1000,
} I2C_SW_Speed_Mode_TypeDef; //i2c速率 unit Hz
typedef enum
{
I2C_SW_One_Byte = 1,
I2C_SW_Two_Byte = 2,
I2C_SW_Four_Byte = 4
} I2C_SW_Data_Width_TypeDef;//数据长度（寄存器地址或者值的数据长度）
typedef enum
{
I2C_SW_Slave_Address_7Bit,
I2C_SW_Slave_Address_10Bit,
} I2C_SW_Slave_Address_Width_TypeDef;//i2c slave address的位宽
typedef struct
{
GPIO_TypeDef *scl_port; //定义IIC时钟使用的端口
uint16_t scl_pin; //定义IIC时钟使用的PIN脚
GPIO_TypeDef *sda_port; //定义IIC数据使用的端口
uint16_t sda_pin; //定义IIC数据使用的PIN脚
uint8_t sda_pin_num; //定义延时，以适应不同器件对速率的不同要求,具体值要在调试中确定
uint8_t addr; //器件地址
uint8_t sda_pin_num; //SDA Pin ，操作IO Mode
uint16_t addr; //器件地址， 兼容16bit
uint32_t delaytick; //定义延时，以适应不同器件对速率的不同要求,具体值要在调试中确定
I2C_SW_Slave_Address_Width_TypeDef slave_address_width;
I2C_SW_Data_Width_TypeDef slave_reg_addr_width;
I2C_SW_Data_Width_TypeDef slave_reg_value_width;
}IIC_SOFT_TypeDef;
//IO方向设置
@ -48,18 +73,24 @@ int IIC_SDA_Mode_Out(const IIC_SOFT_TypeDef *pSoftIIC);
void IIC_Start(const IIC_SOFT_TypeDef *pSoftIIC); //发送IIC开始信号
void IIC_Stop(const IIC_SOFT_TypeDef *pSoftIIC); //发送IIC停止信号
void IIC_Send_Byte(const IIC_SOFT_TypeDef *pSoftIIC,uint8_t txd); //IIC发送一个字节
// uint8_t IIC_Read_Byte(unsigned char ack);//IIC读取一个字节
uint8_t IIC_Read_Byte( const IIC_SOFT_TypeDef *pSoftIIC);//IIC读取一个字节
uint8_t IIC_Wait_Ack(const IIC_SOFT_TypeDef *pSoftIIC); //IIC等待ACK信号
int IIC_Send_Byte(const IIC_SOFT_TypeDef *pSoftIIC,uint8_t txd); //IIC发送一个字节
int IIC_Read_Byte( const IIC_SOFT_TypeDef *pSoftIIC);//IIC读取一个字节
int IIC_Send_Slave_Addr(const IIC_SOFT_TypeDef *pSoftIIC,uint8_t r_w);
int IIC_Send_Reg_Addr(const IIC_SOFT_TypeDef *pSoftIIC,uint32_t reg_addr );
int IIC_Wait_Ack(const IIC_SOFT_TypeDef *pSoftIIC); //IIC等待ACK信号
void IIC_Ack(const IIC_SOFT_TypeDef *pSoftIIC); //IIC发送ACK信号
void IIC_NAck(const IIC_SOFT_TypeDef *pSoftIIC); //IIC不发送ACK信号
uint8_t IIC_Read_Test(const IIC_SOFT_TypeDef *pSoftIIC, uint8_t reg_addr, uint8_t *buf, uint8_t len);
uint8_t IIC_Write_Test(const IIC_SOFT_TypeDef *pSoftIIC , uint8_t reg_addr, uint8_t *buf, uint8_t len);
int IIC_Read_Buf(const IIC_SOFT_TypeDef *pSoftIIC, uint32_t reg_addr , uint8_t *buf, uint8_t len);
int IIC_Write_Buf(const IIC_SOFT_TypeDef *pSoftIIC , uint32_t reg_addr, uint8_t *buf, uint8_t len);
int IIC_Device_Check(const IIC_SOFT_TypeDef *pSoftIIC);
#endif
@ -96,31 +127,30 @@ uint8_t IIC_Write_Test(const IIC_SOFT_TypeDef *pSoftIIC , uint8_t reg_addr, uint
// *SDA
//
十位slave 先发 高位
0xF00 | ((slave_addr>> 8 & 0x03)<<2) | r_w
HAL_I2C_MspDeInit( &hi2c1 );
uint8_t readout[256] = {0};
uint8_t writein[1] = {0xFB};
16bit 寄存器 addr ,先发 (addr>>8)&0xFF ,后发 addr&0xFF
// IIC_Init( );
// IIC_Write_Test( 0xA0, 0, writein, 1 );
// HAL_Delay( 200 );
// IIC_Read_Test( 0xA0, 0, readout, 1 );
// log_i("iic test %02X .... ", *readout);
IIC_SOFT_TypeDef sIIC = {
GPIOB, GPIO_PIN_6, GPIOB, GPIO_PIN_7,
7,0xA0,1,
7,0x50,1,
I2C_SW_Slave_Address_7Bit,
I2C_SW_One_Byte,
I2C_SW_One_Byte,
};
IIC_Init( &sIIC );
if (!IIC_Device_Check(&sIIC))
log_i( "hello i2c_address= 0x%02X (7bit) is exist\r\n", sIIC.addr);
IIC_Write_Test( &sIIC,0xA0, 0, writein, 1 );
IIC_Write_Buf( &sIIC, 0, writein, 1 );
HAL_Delay( 200 );
IIC_Read_Test(&sIIC, 0xA0, 0, readout, 1 );
IIC_Read_Buf(&sIIC, 0, readout, 1 );
log_i("iic test %02X .... ", *readout);
log_i("iic test %02X .... \r\n ", *readout);
*/

124
bsp/Src/bsp_i2c_soft.c → device/Src/bsp_i2c_soft.c
Unescape View File

@ -72,7 +72,7 @@ void IIC_Stop(const IIC_SOFT_TypeDef *pSoftIIC)
//等待应答信号到来
//返回值：1，接收应答失败
// 0，接收应答成功
uint8_t IIC_Wait_Ack(const IIC_SOFT_TypeDef *pSoftIIC)
int IIC_Wait_Ack(const IIC_SOFT_TypeDef *pSoftIIC)
{
uint8_t ucErrTime=0;
// SDA_IN(); //SDA设置为输入
@ -125,7 +125,7 @@ void IIC_NAck(const IIC_SOFT_TypeDef *pSoftIIC)
//返回从机有无应答
//1，有应答
//0，无应答
void IIC_Send_Byte(const IIC_SOFT_TypeDef *pSoftIIC,uint8_t txd)
int IIC_Send_Byte(const IIC_SOFT_TypeDef *pSoftIIC, uint8_t txd)
{
uint8_t t;
// SDA_OUT();//sda线输出
@ -138,15 +138,16 @@ void IIC_Send_Byte(const IIC_SOFT_TypeDef *pSoftIIC,uint8_t txd)
// IIC_SDA( (txd&0x80)>>7);
GPIO_WRITE_PIN(pSoftIIC->sda_port, pSoftIIC->sda_pin, (txd&0x80)>>7 );
txd<<=1;
delay_us(2); //对TEA5767这三个延时都是必须的
delay_us(2);
GPIO_WRITE_PIN(pSoftIIC->scl_port, pSoftIIC->scl_pin, 1);
delay_us(2);
GPIO_WRITE_PIN(pSoftIIC->scl_port, pSoftIIC->scl_pin, 0);
delay_us(2);
}
}
return 0;
}
uint8_t IIC_Read_Byte( const IIC_SOFT_TypeDef *pSoftIIC)
int IIC_Read_Byte( const IIC_SOFT_TypeDef *pSoftIIC)
{
unsigned char i,receive=0;
@ -168,17 +169,85 @@ uint8_t IIC_Read_Byte( const IIC_SOFT_TypeDef *pSoftIIC)
return receive;
}
uint8_t IIC_Write_Test(const IIC_SOFT_TypeDef *pSoftIIC , uint8_t reg_addr, uint8_t *buf, uint8_t len)
// 发送Slave_Addr 带应答， 兼容7bit 10bit
int IIC_Send_Slave_Addr(const IIC_SOFT_TypeDef *pSoftIIC,uint8_t r_w)
{
if( pSoftIIC->slave_address_width == I2C_SW_Slave_Address_7Bit )
{
log_i("salve adrr %02X %02X",pSoftIIC->addr, (pSoftIIC->addr << 1)|r_w);
IIC_Send_Byte(pSoftIIC, (pSoftIIC->addr << 1) | r_w);
if(IIC_Wait_Ack(pSoftIIC)) { IIC_Stop(pSoftIIC); return -1;};
}
else if( pSoftIIC->slave_address_width == I2C_SW_Slave_Address_10Bit )
{
uint8_t h_addr = 0x0F00 | ((pSoftIIC->addr >> 8 & 0x03) << 2) | r_w;
IIC_Send_Byte(pSoftIIC, h_addr);
if(IIC_Wait_Ack(pSoftIIC)) { IIC_Stop(pSoftIIC); return -1;};
uint8_t l_addr = pSoftIIC->addr & 0xff;
IIC_Send_Byte(pSoftIIC, l_addr);
if(IIC_Wait_Ack(pSoftIIC)) { IIC_Stop(pSoftIIC); return -1;};
}
return 0;
}
// 发送reg_addr 带应答， 兼容8bit 16bit 32bit
int IIC_Send_Reg_Addr( const IIC_SOFT_TypeDef *pSoftIIC, uint32_t reg_addr )
{
for(int j = 0; j < pSoftIIC->slave_reg_addr_width; j++)
{
uint8_t offset = (pSoftIIC->slave_reg_addr_width - 1 - j) * 8;
uint8_t temp_reg_addr = (reg_addr >> offset) & 0xff;
IIC_Send_Byte(pSoftIIC, temp_reg_addr);
if(IIC_Wait_Ack(pSoftIIC)) { IIC_Stop(pSoftIIC); return -1;};
}
return 0;
}
int IIC_Send_One_Reg_Value( const IIC_SOFT_TypeDef *pSoftIIC, uint32_t reg_val )
{
for(int k = 0; k < pSoftIIC->slave_reg_value_width; k++)
{
uint8_t offset = (pSoftIIC->slave_reg_value_width - 1 - k) * 8;
i2c_send_byte(pSoftIIC, (reg_val >> offset) & 0xff);
if(!i2c_wait_ack(pSoftIIC))
return false;
}
return 0;
}
int IIC_Send_Receive_One_Reg_Value( const IIC_SOFT_TypeDef *pSoftIIC, uint32_t* reg_val, uint8_t ack )
{
for(int k = 0; k < pSoftIIC->slave_reg_value_width; k++)
{
uint8_t offset = (pSoftIIC->slave_reg_value_width - 1 - k) * 8;
*reg_val |= (IIC_Read_Byte(pSoftIIC) << offset);
if(ack)
i2c_ack(pSoftIIC);
else
i2c_no_ack(pSoftIIC);
}
return 0;
}
int IIC_Write_Buf(const IIC_SOFT_TypeDef *pSoftIIC , uint32_t reg_addr, uint8_t *buf, uint8_t len)
{
IIC_Start(pSoftIIC);
IIC_Send_Byte(pSoftIIC,pSoftIIC->addr & 0xFE);
if(IIC_Wait_Ack(pSoftIIC)) { IIC_Stop(pSoftIIC); return -1;};
IIC_Send_Byte(pSoftIIC,reg_addr);
if(IIC_Wait_Ack(pSoftIIC)) { IIC_Stop(pSoftIIC); return -1;};
IIC_Send_Slave_Addr( pSoftIIC,I2C_WRITE );
IIC_Send_Reg_Addr( pSoftIIC, reg_addr );
IIC_Send_Byte(pSoftIIC,*buf);
if(IIC_Wait_Ack(pSoftIIC)) { IIC_Stop(pSoftIIC); return -1;};
for (size_t i = 0; i < len; i++)
{
IIC_Send_Byte(pSoftIIC,*buf);
if(IIC_Wait_Ack(pSoftIIC)) { IIC_Stop(pSoftIIC); return -1;};
}
IIC_Stop(pSoftIIC);//产生一个停止条件
// HAL_Delay( 200 );
@ -187,21 +256,16 @@ uint8_t IIC_Read_Byte( const IIC_SOFT_TypeDef *pSoftIIC)
}
// 寄存器地址 8位置
uint8_t IIC_Read_Test(const IIC_SOFT_TypeDef *pSoftIIC, uint8_t reg_addr, uint8_t *buf, uint8_t len)
int IIC_Read_Buf(const IIC_SOFT_TypeDef *pSoftIIC, uint32_t reg_addr, uint8_t *buf, uint8_t len)
{
uint8_t temp=0;
IIC_Start(pSoftIIC);
IIC_Send_Byte(pSoftIIC,pSoftIIC->addr & 0xFE);
if(IIC_Wait_Ack(pSoftIIC)) { IIC_Stop(pSoftIIC); return -1;};
uint8_t temp=0;
IIC_Send_Byte(pSoftIIC,reg_addr);
if(IIC_Wait_Ack(pSoftIIC)) { IIC_Stop(pSoftIIC); return -1;};
IIC_Start(pSoftIIC);
IIC_Send_Slave_Addr( pSoftIIC,I2C_WRITE );
IIC_Send_Reg_Addr( pSoftIIC, reg_addr );
IIC_Start(pSoftIIC);
IIC_Send_Byte(pSoftIIC,pSoftIIC->addr |0x01); //进入接收模式
if(IIC_Wait_Ack(pSoftIIC)) { IIC_Stop(pSoftIIC); return -1;};
IIC_Send_Slave_Addr( pSoftIIC,I2C_READ );
for(int i=0; i<len-1; i++)
{
*buf=IIC_Read_Byte(pSoftIIC);
@ -216,3 +280,15 @@ uint8_t IIC_Read_Test(const IIC_SOFT_TypeDef *pSoftIIC, uint8_t reg_addr, uint8_
return 0;
}
int IIC_Device_Check(const IIC_SOFT_TypeDef *pSoftIIC)
{
uint8_t ret = 0;
IIC_Start(pSoftIIC);
ret = IIC_Send_Slave_Addr( pSoftIIC,I2C_WRITE );
IIC_Stop(pSoftIIC);
return ret;
}
Write Preview
Loading…
Cancel
Save