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https://github.com/eddyem/stm32samples.git
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35 lines
1.2 KiB
C
35 lines
1.2 KiB
C
/*
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* This file is part of the mlxtest project.
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* Copyright 2025 Edward V. Emelianov <edward.emelianoff@gmail.com>.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "hardware.h"
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static inline void gpio_setup(){
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RCC->AHBENR |= RCC_AHBENR_GPIOAEN | RCC_AHBENR_GPIOBEN; // for USART and LEDs
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for(int i = 0; i < 10000; ++i) nop();
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// USB - alternate function 14 @ pins PA11/PA12; SWD - AF0 @PA13/14
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GPIOA->AFR[1] = AFRf(14, 11) | AFRf(14, 12);
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GPIOA->MODER = MODER_AF(11) | MODER_AF(12) | MODER_AF(13) | MODER_AF(14) | MODER_O(15);
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GPIOB->MODER = MODER_O(0) | MODER_O(1);
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GPIOB->ODR = 1;
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}
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void hw_setup(){
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gpio_setup();
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}
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