mirror of
https://github.com/eddyem/stm32samples.git
synced 2026-02-28 11:54:30 +03:00
40 lines
1.5 KiB
C
40 lines
1.5 KiB
C
/*
|
|
* 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
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "hardware.h"
|
|
|
|
uint8_t Config_mode = 0;
|
|
|
|
static inline void gpio_setup(){
|
|
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);
|
|
GPIOA->PUPDR = PUPD_PU(9);
|
|
for(int i = 0; i < 10000; ++i) nop();
|
|
if(CFG_ON()) Config_mode = 1;
|
|
}
|
|
|
|
void hw_setup(){
|
|
gpio_setup();
|
|
}
|
|
|