/*
 * This file is part of the F303usart project.
 * Copyright 2021 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 "stm32f3.h"
#include "hardware.h"
#include "usart.h"


volatile uint32_t Tms = 0;

void sys_tick_handler(void){
    ++Tms;
}

int main(void){
    if(!StartHSE()) StartHSI();
    SysTick_Config((uint32_t)72000); // 1ms
    hw_setup();
    usart_setup();
    uint32_t ctr = Tms;
    while(1){
        if(Tms - ctr > 499){
            ctr = Tms;
            pin_toggle(GPIOB, 1 << 1 | 1 << 0); // toggle LED @ PB0
           // usart_send(1, "test\n");
           // transmit_tbuf();
        }
        for(int n = 1; n <= USARTNUM; ++n){
            if(usartrx(n)){ // usart1 received data, store in in buffer
                char *txt = NULL;
                int r = usart_getline(n, &txt);
                if(r){
                    txt[r] = 0;
                    usart_send(1, "Got by USART");
                    char u[] = "0 : "; u[0] = '0' + n;
                    usart_send(1, u);
                    usart_send(1, txt);
                    if(txt[0] == '2') usart_send(2, "Test for USART2\n");
                    else if(txt[0] == '3') usart_send(3, "Test for USART3\n");
                    transmit_tbuf();
                }
            }
        }
    }
}