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30 lines
943 B
C
30 lines
943 B
C
// Copyright (c) 2018-2021 Cesanta Software Limited
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// All rights reserved
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#include "mcu.h"
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// These are NUCLEO-F103RB settings - adjust for your specific board
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#define RAM_SIZE 20480 // RAM size on this device, needed by link.ld
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#define ROM_SIZE 131072 // Flash size for this device, needed by link.ld
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#define LED1 PIN('A', 5) // On-board LED pin
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static inline void led_toggle(void) {
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gpio_toggle(LED1);
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}
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static inline void init_hardware(void) {
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RCC->CR |= (RCC_CR_HSEON);
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while (!(RCC->CR & RCC_CR_HSERDY)) (void) 0;
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RCC->CFGR &= ~(RCC_CFGR_SW);
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RCC->CFGR |= (RCC_CFGR_SW_HSE);
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RCC->CFGR &= ~(RCC_CFGR_PLLMULL);
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RCC->CFGR |= (RCC_CFGR_PLLMULL9);
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RCC->CR |= (RCC_CR_PLLON);
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while (!(RCC->CR & RCC_CR_PLLRDY)) (void) 0;
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RCC->CFGR &= ~(RCC_CFGR_SW);
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RCC->CFGR |= (RCC_CFGR_SW_PLL);
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RCC->APB2ENR |= BIT(2) | BIT(3) | BIT(4); // Init GPIO banks A,B,C
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gpio_init(LED1, OUTPUT); // Set LED
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}
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