Welcome

I am Developing a Custom HAL Driver For STM32F446xx and STM32F407xx MCU.It Currently Supports

• GPIO
• Interrupts

And Support for the following are yet to come

• USART
• SPI
• I2C

Documentation

GPIO :

For initializing GPIO Pin as OUTPUT -

	GPIO_PinOutput(pGPIOx, PinNumber, PinSpeed, PinOPType, PinPUPDC)

Parameters -

1. pGPIOx- Gpio Port of the Pin you want to Initialize (Parameters:GPIOA,GPIOB,....,GPIOH)

2. PinNumber - Pin Number of the GPIO Port (Parameters:0,1,2,....,15)

3. PinSpeed - Pin Speed of the GPIO Pin (Parameters:LOW,MEDIUM,FAST,FULL)

4. PinOPType - Pin Output like Push-Pull and Open-Drain(Parameters:OD,PP)

5. PinPUPDC - Used For Activating Internal PushDown-PullUp resistor(Parameters:NO_PUPD,PUSHDOWN,PULLUP)

Example :

	GPIO_PinOutput(GPIOA, 5, HIGH, PP, NO_PUPD);

For initializing GPIO Pin as INPUT -

	GPIO_PinInput(pGPIOx, PinNumber, PinSpeed, PinPUPDC)

Parameters -

1. pGPIOx- Gpio Port of the Pin you want to Initialize (Parameters:GPIOA,GPIOB,....,GPIOH)

2. PinNumber - Pin Number of the GPIO Pin (Parameters:0,1,2,....,15)

3. PinSpeed - Pin Speed of the GPIO Pin (Parameters:LOW,MEDIUM,FAST,FULL)

4. PinPUPDC - Used For Activating Internal PushDown-PullUp resistor(Parameters:NO_PUPD,PUSHDOWN,PULLUP)

Example :

	GPIO_PinInput(GPIOC, 13, HIGH, NO_PUPD);

For initializing GPIO Pin as OTHER -

	GPIO_PinSetup(pGPIOx, PinNumber, PinMode, PinSpeed, PinOPType, PinPUPDC)

Parameters -

1. pGPIOx- Gpio Port of the pin you want to Initialize (Parameters:GPIOA,GPIOB,....,GPIOH)

2. PinNumber - Pin Number of the GPIO Pin (Parameters:0,1,2,....,15)

3. PinMode - The Mode of the GPIO Pin (Parameters:INPUT,OUTPUT,ANALOG,ALTFN,IT_FT,IT_RT_IT_RFT) NOTE : The IT_FT,IT_RT_IT_RFT Modes uses Interrupt Mode Of the MCU,Please Refer to the Interupt Documentation

4. PinSpeed - Pin Speed of the GPIO Pin (Parameters:LOW,MEDIUM,FAST,FULL)

5. PinOPType - Sets the GPIO Pin as Open-Drain , Push-Pull (Parameters:OD,PP,NONE)

6. PinPUPDC - Used For Activating Internal PushDown-PullUp resistor(Parameters:NO_PUPD,PUSHDOWN,PULLUP)

NOTE : SET THE PinOPType AS NONE WHEN SETTING THE PIN AS INPUT

Example :

	GPIO_PinSetup(GPIOB, 14, ANALOG, HIGH, 0,NO_PUPD);

For Writing to a GPIO Pin-

	GPIO_WriteToOutputPin(pGPIOx, PinNumber, Value)

Parameters -

1. pGPIOx- Gpio Port of the Pin you want to write to (Parameters:GPIOA,GPIOB,....,GPIOH)

2. PinNumber - Pin Number of the GPIO Pin (Parameters:0,1,2,....,15)

3. Value - Value to Write to the GPIO Pin (Parameters:HIGH,LOW)

Example :

	GPIO_WriteToOutputPin(GPIOA, 5, 0);

For Writing to a GPIO Port-

	GPIO_WriteToOutputPin(pGPIOx, Value)

Parameters -

1. pGPIOx- Gpio Port you want to write to (Parameters:GPIOA,GPIOB,....,GPIOH)

2. Value - Value to Write to the GPIO Pin (Parameters:HIGH,LOW)

Example :

	GPIO_WriteToOutputPort(GPIOA, 0);

For Toggling a GPIO Pin-

	GPIO_ToggleOutputPin(pGPIOx, PinNumber)

Parameters -

1. pGPIOx- Gpio Port of the pin the you want to toggle(Parameters:GPIOA,GPIOB,....,GPIOH)

2. PinNumber - Pin Number of the GPIO Pin (Parameters:0,1,2,....,15)

Example :

	GPIO_ToggleOutputPin(GPIOA, 5);

For Toggling a GPIO Port-

	GPIO_ToggleOutputPort(pGPIOx)

Parameters -

1. pGPIOx- Gpio Port you want to toggle(Parameters:GPIOA,GPIOB,....,GPIOH)

Example :

	GPIO_ToggleOutputPin(GPIOA);

For Reading from a GPIO Pin-

	GPIO_ReadFromInputPin(pGPIOx, PinNumber)

Parameters -

1. pGPIOx- Gpio Port of the pin you want read(Parameters:GPIOA,GPIOB,....,GPIOH)

2. PinNumber - Pin Number of the GPIO Pin (Parameters:0,1,2,....,15)

Example :

	GPIO_ReadFromInputPin(GPIOC, 13);

For Reading from a GPIO Port-

	GPIO_ReadFromInputPort(pGPIOx)

Parameters -

1. pGPIOx- Gpio Port From which you want to read (Parameters:GPIOA,GPIOB,....,GPIOH)

Example :

	GPIO_ReadFromInputPort(GPIOC);

Interrupts :

NOTE:THE GPIO PIN SHOULD BE INITIALISED AS INTERRUPT MODE,PLEASE REFER "For initializing GPIO Pin as OTHER -"

Configuring the Interrupt for GPIO Using EXTI Engine:

	GPIO_IRQInterruptConfig(IRQNumber, EnorDi)

Parameter -

1.IRQNumber- It is define IRQ Number of the Corresponding GPIO Pin's EXTI Engine (Parameter:IRQ_NO_EXTI0,...,IRQ_NO_EXTI4,IRQ_NO_EXTI5_9,IRQ_NO_EXTI15_10)
Note: The x in IRQ_NO_EXTIx matches the corresponding GPIO Pin you want to set it up

2.EnorDi - It is used the enable or disable the corresponding EXTI Engine (Parameters: ENABLE,DISABLE)

Example :

Setting up the Interrupt for GPIO Pin 13

	GPIO_IRQInterruptConfig(IRQ_NO_EXTI15_10, ENABLE);

Configuring the Interrupt Priority for GPIO:

	GPIO_IRQPriorityConfig(IRQNumber, IRQPriority)

Parameter -

1.IRQNumber- It is define IRQ Number of the Corresponding GPIO Pin's EXTI Engine (Parameter:IRQ_NO_EXTI0,...,IRQ_NO_EXTI4,IRQ_NO_EXTI5_9,IRQ_NO_EXTI15_10)
Note: The x in IRQ_NO_EXTIx matches the corresponding GPIO Pin you want to set it up

2.IRQPriority - It is used set the the Interrupt Priority Number of the Interrupt (Parameters: 15,.....,1)

Example :

Setting up the Interrupt Priority for GPIO Pin 13

	GPIO_IRQPriorityConfig(IRQ_NO_EXTI15_10, 15);