/**
* @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 设置指定引脚输出高电平或者低电平
* @note 此引脚首先配置成输出引脚
* @code
* //设置PORTB端口的10引脚输出高电平
* GPIO_WriteBit(HW_GPIOB, 10, 1);
* @endcode
* @param instance: GPIO模块号
* @arg HW_GPIOA :芯片的PORTA端口
* @arg HW_GPIOB :芯片的PORTB端口
* @arg HW_GPIOC :芯片的PORTC端口
* @arg HW_GPIOD :芯片的PORTD端口
* @arg HW_GPIOE :芯片的PORTE端口
* @param pinIndex :端口上的引脚号 0~31
* @param data : 引脚的电平状态
* @arg 0 : 低电平
* @arg 1 : 高电平
* @retval None
*/
void GPIO_WriteBit(uint32_t instance, uint8_t pinIndex, uint8_t data)
{
/* param check */
assert_param(IS_GPIO_ALL_INSTANCE(instance));
assert_param(IS_PORT_ALL_INSTANCE(instance));
assert_param(IS_GPIO_ALL_PIN(pinIndex));
(data) ? (GPIO_InstanceTable[instance]->PSOR |= (1 << pinIndex)):(GPIO_InstanceTable[instance]->PCOR |= (1 << pinIndex));
}
/**
* @brief 设置引脚为输入还是输出功能 用户一般不必调用
* @note 只有当引脚作为GPIO时才有意义
* @code
* // 将PORTB端口的3引脚设置输入引脚
* GPIO_PinConfig(HW_GPIOB, 3, kInpput);
* @endcode
* @param instance: GPIO模块号
* @arg HW_GPIOA :芯片的PORTA端口
* @arg HW_GPIOB :芯片的PORTB端口
* @arg HW_GPIOC :芯片的PORTC端口
* @arg HW_GPIOD :芯片的PORTD端口
* @arg HW_GPIOE :芯片的PORTE端口
* @param pinIndex :端口上的引脚号 0~31
* @param mode :输入或者输出设置
* @arg kInpput :输入功能选择
* @arg kOutput :输出功能选择
* @retval None
*/
void GPIO_PinConfig(uint32_t instance, uint8_t pinIndex, GPIO_PinConfig_Type mode)
{
/* param check */
assert_param(IS_GPIO_ALL_INSTANCE(instance));
assert_param(IS_PORT_ALL_INSTANCE(instance));
assert_param(IS_GPIO_ALL_PIN(pinIndex));
SIM->SCGC5 |= SIM_GPIOClockGateTable[instance];
(mode == kOutput) ? (GPIO_InstanceTable[instance]->PDDR |= (1 << pinIndex)):(GPIO_InstanceTable[instance]->PDDR &= ~(1 << pinIndex));
}
/**
* @brief 设置引脚复用功能 这个函数会被很多其他外设模块驱动程序调用
* @note 复用功能可参考 Reference Manual 的 Signal Multiplexing and Signal Descriptions 章节
* @code
* // 将一PORTA端口的3引脚复用成1模式.
* PORT_PinMuxConfig(HW_GPIOA, 3, kPinAlt1);
* @endcode
* @param instance: GPIO模块号
* @arg HW_GPIOA :芯片的PORTA端口
* @arg HW_GPIOB :芯片的PORTB端口
* @arg HW_GPIOC :芯片的PORTC端口
* @arg HW_GPIOD :芯片的PORTD端口
* @arg HW_GPIOE :芯片的PORTE端口
* @param pinIndex :端口上的引脚号 0~31
* @param pinMux :复用功能选项，不同的复用值代表不同的功能
* @arg kPinAlt0 :引脚复用成0模式
* @arg . : .
* @arg . : .
* @arg . : .
* @arg kPinAlt7 :引脚复用成7模式
* @retval None
*/
void PORT_PinMuxConfig(uint32_t instance, uint8_t pinIndex, PORT_PinMux_Type pinMux)
{
/* param check */
assert_param(IS_GPIO_ALL_INSTANCE(instance));
assert_param(IS_PORT_ALL_INSTANCE(instance));
assert_param(IS_GPIO_ALL_PIN(pinIndex));
SIM->SCGC5 |= SIM_GPIOClockGateTable[instance];
PORT_InstanceTable[instance]->PCR[pinIndex] &= ~(PORT_PCR_MUX_MASK);
PORT_InstanceTable[instance]->PCR[pinIndex] |= PORT_PCR_MUX(pinMux);
}
/**
* @brief 读取一个引脚上的电平状态
* @code
* //读取PORTB端口的10引脚的电平状态
* uint8_t status ; //用于存储引脚的状态
* status = GPIO_ReadBit(HW_GPIOB, 10); //获取引脚的状态并存储到status中
* @endcode
* @param instance: GPIO模块号
* @arg HW_GPIOA :芯片的PORTA端口
* @arg HW_GPIOB :芯片的PORTB端口
* @arg HW_GPIOC :芯片的PORTC端口
* @arg HW_GPIOD :芯片的PORTD端口
* @arg HW_GPIOE :芯片的PORTE端口
* @param pinIndex :端口上的引脚号 0~31
* @retval
* @arg 0 : 低电平
* @arg 1 : 高电平
*/
uint8_t GPIO_ReadBit(uint32_t instance, uint8_t pinIndex)
{
/* param check */
assert_param(IS_GPIO_ALL_INSTANCE(instance));
assert_param(IS_PORT_ALL_INSTANCE(instance));
assert_param(IS_GPIO_ALL_PIN(pinIndex));
/* input or output */
if(((GPIO_InstanceTable[instance]->PDDR) >> pinIndex) & 0x01)
{
return ((GPIO_InstanceTable[instance]->PDOR >> pinIndex) & 0x01);
}
else
{
return ((GPIO_InstanceTable[instance]->PDIR >> pinIndex) & 0x01);
/**
* @brief 设置一个引脚的上下拉电阻功能 用户一般不必调用
* @code
* // 将PORTA端口的3引脚设置为上拉电阻(在输入的情况下)
* PORT_PinPullConfig(HW_GPIOA, 3, kPullUp);
* @endcode
* @param instance: GPIO模块号
* @arg HW_GPIOA :芯片的PORTA端口
* @arg HW_GPIOB :芯片的PORTB端口
* @arg HW_GPIOC :芯片的PORTC端口
* @arg HW_GPIOD :芯片的PORTD端口
* @arg HW_GPIOE :芯片的PORTE端口
* @param pinIndex :端口上的引脚号 0~31
* @param pull :引脚电阻模式选择
* @arg kPullDisabled :关闭电阻上下拉
* @arg kPullUp :上拉电阻
* @arg kPullDown :下拉电阻
* @retval None
*/
void PORT_PinPullConfig(uint32_t instance, uint8_t pinIndex, PORT_Pull_Type pull)
{
/* param check */
assert_param(IS_GPIO_ALL_INSTANCE(instance));
assert_param(IS_PORT_ALL_INSTANCE(instance));
assert_param(IS_GPIO_ALL_PIN(pinIndex));
SIM->SCGC5 |= SIM_GPIOClockGateTable[instance];
switch(pull)
{
case kPullDisabled:
PORT_InstanceTable[instance]->PCR[pinIndex] &= ~PORT_PCR_PE_MASK;
break;
case kPullUp:
PORT_InstanceTable[instance]->PCR[pinIndex] |= PORT_PCR_PE_MASK;
PORT_InstanceTable[instance]->PCR[pinIndex] |= PORT_PCR_PS_MASK;
break;
case kPullDown:
PORT_InstanceTable[instance]->PCR[pinIndex] |= PORT_PCR_PE_MASK;
PORT_InstanceTable[instance]->PCR[pinIndex] &= ~PORT_PCR_PS_MASK;
break;
default:
break;
}
}
