.. _peripherals:

Used Peripheral Modules
=======================

This section lists all the used peripheral modules of the ``STM32F407VxT6``.

Core Peripherals
----------------

- ``SysTick``: Generating a 100us tick for the LCD routine and 1ms base system tick.
- ``NVIC``: Interrupt controller
- ``FPU``: The Flaoting Point Unit is activated and used in this formware.

AHB Peripherals
---------------

- ``DMA2``
	- ``Stream0``: DMA transfer of PT1000 measurement ADC to memory
	- ``Stream4``: DMA transfer of Safety ADC measurement values
	- ``Stream5``: Shell UART RX
	- ``Stream7``: Shell UART TX
- ``RNG``: Random number generation for stack corruption / overflow checker.
- ``CRC``: CRC verfication of various data (Safety structures, EEPROM data, Safety RAM)
- ``Backup RAM``: Backup RAM storing errors and bootloader information beyond system resets. The memory is cleared by a power cycle!

ABP1 Peripherals
----------------

- ``IWDG``: Independent Watchdog
- ``TIM2``: PT1000 measurement ADC sample time generation timer. Genewrates the 1 KHz sample trigger to the ADC peripheral via the internal event routing system.
- ``TIM3``: PWM timer for oven relais output.
- ``TIM5``: Input capture for rotary encoder.
- ``TIM7``: Timer for loudspeaker tone generation.
 

APB2 Peripherals
----------------

- ``SPI1``: SPI for external SPI-EEPROM
- ``SDIO``: SD card interface
- ``USART1``: Shell UART
- ``ADC1``: Safety ADC for monitoring voltages
- ``ADC3``: PT1000 measurement ADC