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copy InterfaceBoard as 7CDCs template

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Edward Emelianov
2026-02-13 22:35:10 +03:00
parent 522e1e2ee3
commit 148c25b555
63 changed files with 3919 additions and 1163 deletions
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47
F3:F303/Seven_CDCs/hardware.c
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@@ -1,6 +1,6 @@
/*
* This file is part of the SevenCDCs project.
* Copyright 2023 Edward V. Emelianov <edward.emelianoff@gmail.com>.
* This file is part of the multiiface project.
* Copyright 2026 Edward V. Emelianov <edward.emelianoff@gmail.com>.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -17,46 +17,23 @@
*/
#include "hardware.h"
#include "usart.h"
TRUE_INLINE void iwdg_setup(){
uint32_t tmout = 16000000;
/* Enable the peripheral clock RTC */
/* (1) Enable the LSI (40kHz) */
/* (2) Wait while it is not ready */
RCC->CSR |= RCC_CSR_LSION; /* (1) */
while((RCC->CSR & RCC_CSR_LSIRDY) != RCC_CSR_LSIRDY){if(--tmout == 0) break;} /* (2) */
/* Configure IWDG */
/* (1) Activate IWDG (not needed if done in option bytes) */
/* (2) Enable write access to IWDG registers */
/* (3) Set prescaler by 64 (1.6ms for each tick) */
/* (4) Set reload value to have a rollover each 2s */
/* (5) Check if flags are reset */
/* (6) Refresh counter */
IWDG->KR = IWDG_START; /* (1) */
IWDG->KR = IWDG_WRITE_ACCESS; /* (2) */
IWDG->PR = IWDG_PR_PR_1; /* (3) */
IWDG->RLR = 1250; /* (4) */
tmout = 16000000;
while(IWDG->SR){if(--tmout == 0) break;} /* (5) */
IWDG->KR = IWDG_REFRESH; /* (6) */
}
uint8_t Config_mode = 0;
static inline void gpio_setup(){
RCC->AHBENR |= RCC_AHBENR_GPIOAEN | RCC_AHBENR_GPIOBEN;
// USB - alternate function 14 @ pins PA11/PA12; USART1 = AF7 @PA9/10; SWD - AF0 @PA13/14
GPIOA->AFR[1] = AFRf(7, 9) | AFRf(7, 10) | AFRf(14, 11) | AFRf(14, 12);
// USART1: PA10(Rx), PA9(Tx); USB - PA11, PA12; SWDIO - PA13, PA14; Pullup - PA15
GPIOA->MODER = MODER_AF(9) | MODER_AF(10) | MODER_AF(11) | MODER_AF(12) | MODER_AF(13) | MODER_AF(14) | MODER_O(15);
RCC->AHBENR |= RCC_AHBENR_GPIOAEN | RCC_AHBENR_GPIOBEN; // for USART and LEDs
for(int i = 0; i < 10000; ++i) nop();
// USB - alternate function 14 @ pins PA11/PA12; SWD - AF0 @PA13/14
GPIOA->AFR[1] = AFRf(14, 11) | AFRf(14, 12);
// PA9 - config jumper (PU in), PA10 - USB pullup (PP)
GPIOA->MODER = MODER_I(9) | MODER_O(10) | MODER_AF(11) | MODER_AF(12) | MODER_AF(13) | MODER_AF(14);
GPIOA->OSPEEDR = OSPEED_HI(11) | OSPEED_HI(12) | OSPEED_HI(13) | OSPEED_HI(14);
// LEDs on PB0 and PB1
GPIOB->MODER = GPIO_MODER_MODER0_O | GPIO_MODER_MODER1_O;
GPIOB->ODR = 1;
GPIOA->PUPDR = PUPD_PU(9);
for(int i = 0; i < 10000; ++i) nop();
if(CFG_ON()) Config_mode = 1;
}
void hw_setup(){
gpio_setup();
iwdg_setup();
}