/**
* @brief GPIO初始化配置
* @code
* //初始化配置PORTB端口的10引脚为推挽输出引脚
* GPIO_InitTypeDef GPIO_InitStruct1; //申请一个结构变量
* GPIO_InitStruct1.instance = HW_GPIOB; //选择PORTB端口
* GPIO_InitStruct1.mode = kGPIO_Mode_OPP; //推挽输出
* GPIO_InitStruct1.pinx = 10; //选择10引脚
* //调用初始化GPIO函数
* GPIO_Init(&GPIO_InitStruct1);
* @endcode
* @param GPIO_InitStruct: GPIO初始化结构体，包含了引脚状态参数
GPIO_InitStruct.instance :端口号 HW_GPIOA ~ HW_GPIOE
* @retval None
*/
void GPIO_Init(GPIO_InitTypeDef * GPIO_InitStruct)
{
/* param check */
assert_param(IS_GPIO_ALL_INSTANCE(GPIO_InitStruct->instance));
assert_param(IS_PORT_ALL_INSTANCE(GPIO_InitStruct->instance));
assert_param(IS_GPIO_ALL_PIN(GPIO_InitStruct->pinx));
/* config state */
switch(GPIO_InitStruct->mode)
{
case kGPIO_Mode_IFT:
PORT_PinPullConfig(GPIO_InitStruct->instance, GPIO_InitStruct->pinx, kPullDisabled);
GPIO_PinConfig(GPIO_InitStruct->instance, GPIO_InitStruct->pinx, kInput);
break;
case kGPIO_Mode_IPD:
PORT_PinPullConfig(GPIO_InitStruct->instance, GPIO_InitStruct->pinx, kPullDown);
GPIO_PinConfig(GPIO_InitStruct->instance, GPIO_InitStruct->pinx, kInput);
break;
case kGPIO_Mode_IPU:
PORT_PinPullConfig(GPIO_InitStruct->instance, GPIO_InitStruct->pinx, kPullUp);
GPIO_PinConfig(GPIO_InitStruct->instance, GPIO_InitStruct->pinx, kInput);
break;
case kGPIO_Mode_OPP:
PORT_PinPullConfig(GPIO_InitStruct->instance, GPIO_InitStruct->pinx, kPullDisabled);
GPIO_PinConfig(GPIO_InitStruct->instance, GPIO_InitStruct->pinx, kOutput);
break;
default:
break;
}
/* config pinMux */
PORT_PinMuxConfig(GPIO_InitStruct->instance, GPIO_InitStruct->pinx, kPinAlt1);
}
/**
* @brief I2C快速初始化函数
* \code
* //PE00\PE01初始化为i2c功能，波特率为
* uint32_t instance;
* instance = I2C_QuickInit(I2C1_SCL_PE01_SDA_PE00,1000);
* \endcode
* @param[in] MAP I2C引脚配置缩略图,详见i2c.h
* \param[in] baudrate 波特率(函数中暂未配置，取为默认)
* @retval i2c模块号
*/
uint8_t I2C_QuickInit(uint32_t MAP, uint32_t baudrate)
{
uint8_t i;
map_t * pq = (map_t*)&(MAP);
/* open drain and pull up */
for(i = 0; i < pq->pin_cnt; i++)
{
GPIO_QuickInit(pq->io, pq->pin_start + i, kGPIO_Mode_OPP);
GPIO_QuickInit(pq->io, pq->pin_start + i, kGPIO_Mode_OPP);
GPIO_WriteBit(pq->io, pq->pin_start + i, 1);
PORT_PinPullConfig(pq->io, pq->pin_start + i, kPullUp);
}
/* i2c_gpio struct setup */
i2c.instace = pq->io;
switch(MAP)
{
case I2C1_SCL_PE01_SDA_PE00:
i2c.scl_pin = 1;i2c.sda_pin = 0;
break;
case I2C0_SCL_PE19_SDA_PE18:
i2c.scl_pin = 19;i2c.sda_pin = 18;
break;
case I2C0_SCL_PF22_SDA_PF23:
i2c.scl_pin = 22;i2c.sda_pin = 23;
break;
case I2C0_SCL_PB00_SDA_PB01:
i2c.scl_pin = 0;i2c.sda_pin = 1;
break;
case I2C0_SCL_PB02_SDA_PB03:
i2c.scl_pin = 2;i2c.sda_pin = 3;
break;
case I2C1_SCL_PC10_SDA_PC11:
i2c.scl_pin = 10;i2c.sda_pin = 11;
break;
case I2C0_SCL_PD08_SDA_PD09:
i2c.scl_pin = 8;i2c.sda_pin = 9;
break;
case I2C0_SCL_PE24_SDA_PE25:
i2c.scl_pin = 24;i2c.sda_pin = 25;
break;
case I2C1_SCL_PC01_SDA_PC02:
i2c.scl_pin = 1;i2c.sda_pin = 2;
break;
case I2Cx_SCL_PC14_SDA_PC15:
i2c.scl_pin = 14;i2c.sda_pin = 15;
break;
default:
break;
}
return pq->ip;
}
/**
* @brief 快速初始化IIC模块
* @code
* // 初始化I2C模块: 使用I2C1模块的SCL:PC10 SDA:PC11，通信速度:47000Hz
* I2C_QuickInit(I2C1_SCL_PC10_SDA_PC11, 47000);
* @endcode
* @param MAP: I2C快速初始化选择项，详见i2c.h文件
* @arg I2C1_SCL_PE01_SDA_PE00
* @arg ...
* @arg I2C1_SCL_PC10_SDA_PC11
* @param baudrate :通信速度 建议为: 48000Hz 76000Hz 96000Hz 376000Hz
* @retval i2c模块号
*/
uint8_t I2C_QuickInit(uint32_t MAP, uint32_t baudrate)
{
uint8_t i;
I2C_InitTypeDef I2C_InitStruct1;
QuickInit_Type * pq = (QuickInit_Type*)&(MAP);
I2C_InitStruct1.baudrate = baudrate;
I2C_InitStruct1.instance = pq->ip_instance;
/* init pinmux and open drain and pull up */
for(i = 0; i < pq->io_offset; i++)
{
PORT_PinMuxConfig(pq->io_instance, pq->io_base + i, (PORT_PinMux_Type)pq->mux);
PORT_PinPullConfig(pq->io_instance, pq->io_base + i, kPullUp);
PORT_PinOpenDrainConfig(pq->io_instance, pq->io_base + i, ENABLE);
}
/* init moudle */
I2C_Init(&I2C_InitStruct1);
return pq->ip_instance;
}