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peripheral_table.md

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Peripheral allocation table

This page provides an overview on which harwdare peripherals are used by the OpenRTX firmware on the various platforms.

STM32F405

MD-3x0

Peripheral Status Function
FSMC USED Memory-mapped display management
TIM1
TIM2 USED Time base for ADC sampling rate in audio input stream driver
TIM3 USED PWM time base for tone generator: CH2 CTCSS, CH3 "beep", 109.375kHz
TIM4
TIM5
TIM6
TIM7 USED Tone generator time base for DMA transfers when in AFSK/audio mode
TIM8 USED CH1 LCD backlight dimming, 100kHz, 8 bit
TIM9
TIM10
TIM11
TIM12
TIM13
TIM14 USED Tone generator time base for CTCSS/beep sinewave generation
USART1
USART2
USART3 USED GPS data RX
SPI1 USED External flash memory
SPI2
SPI3
ADC1 USED Sampling of Vbat, RSSI, volume pot. and vox level. Free-running conversion.
ADC2 USED Sampling of audio data in input stream driver
ADC3
DMA1, Stream 0
DMA1, Stream 1
DMA1, Stream 2 USED Transfer of audio samples to PWM in tone generator, very high priority
DMA1, Stream 3
DMA1, Stream 4
DMA1, Stream 5
DMA1, Stream 6
DMA1, Stream 7
DMA2, Stream 0 USED Transfer of ADC samples, middle priority
DMA2, Stream 1
DMA2, Stream 2 USED Transfer of ADC2 samples in input stream driver, high priority
DMA2, Stream 3
DMA2, Stream 4
DMA2, Stream 5
DMA2, Stream 6
DMA2, Stream 7 USED Framebuffer transfer to display, low priority.

MD-UV3x0

Peripheral Status Function
FSMC USED Memory-mapped display management
TIM1
TIM2 USED Time base for ADC sampling rate in audio input stream driver
TIM3 USED PWM time base for tone generator: CH2 CTCSS, CH3 "beep", 109.375kHz
TIM4
TIM5
TIM6
TIM7 USED Tone generator time base for DMA transfers when in AFSK/audio mode
TIM8
TIM9
TIM10
TIM11 USED Timebase for LCD backlight dimming software PWM
TIM12
TIM13
TIM14 USED Tone generator time base for CTCSS/beep sinewave generation
USART1
USART2
USART3 USED GPS data RX
SPI1 USED External flash memory
SPI2
SPI3
ADC1 USED Sampling of Vbat, RSSI, volume pot. and vox level. Free-running conversion.
ADC2 USED Sampling of audio data in input stream driver
ADC3
DMA1, Stream 0
DMA1, Stream 1
DMA1, Stream 2 USED Transfer of audio samples to PWM in tone generator, very high priority
DMA1, Stream 3
DMA1, Stream 4
DMA1, Stream 5
DMA1, Stream 6
DMA1, Stream 7
DMA2, Stream 0 USED Transfer of ADC samples, middle priority
DMA2, Stream 1
DMA2, Stream 2 USED Transfer of ADC2 samples in input stream driver, high priority
DMA2, Stream 3
DMA2, Stream 4
DMA2, Stream 5
DMA2, Stream 6
DMA2, Stream 7 USED Framebuffer transfer to display, low priority.

GDx

  • ADC0: Vbat and vox level, sampling on API call.
  • FTM0: backlight PWM, 58.5kHz, 8 bit