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https://github.com/eddyem/IR-controller.git
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65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/*
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* main.c
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*
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* Copyright 2014 Edward V. Emelianov <eddy@sao.ru, 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 2 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, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*/
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#include "main.h"
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uint32_t Timer = 0; // global timer (milliseconds)
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int main(){
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int i;
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uint32_t Old_timer = 0;
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usbd_device *usbd_dev;
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//rcc_clock_setup_in_hsi_out_48mhz();
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rcc_clock_setup_in_hse_8mhz_out_72mhz();
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rcc_periph_clock_enable(RCC_GPIOC);
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gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, GPIO11|GPIO12);
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gpio_set(GPIOC, GPIO11); // turn off USB
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gpio_clear(GPIOC, GPIO12); // turn on LED
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usbd_dev = USB_init();
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for (i = 0; i < 0x800000; i++)
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__asm__("nop");
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gpio_clear(GPIOC, GPIO11);
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systick_set_clocksource(STK_CSR_CLKSOURCE_AHB_DIV8); // Systyck: 72/8=9MHz
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systick_set_reload(8999); // 9000 pulses: 1kHz
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systick_interrupt_enable();
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systick_counter_enable();
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while(1){
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usbd_poll(usbd_dev);
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if(Timer - Old_timer > 1000){ // write out time in seconds
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Old_timer += 1000;
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gpio_toggle(GPIOC, GPIO12); // toggle LED
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//print_int(Timer/1000, usb_send);
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}
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}
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}
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void sys_tick_handler(){
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usb_send_buffer();
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Timer++;
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}
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