1 | // ----------------------------------------------------------------------------
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2 | #include <stdio.h>
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3 | #include <stdlib.h>
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4 | #include "diag/Trace.h"
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5 |
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6 | #include "stm32f10x.h"
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7 |
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8 | // ----- main() ---------------------------------------------------------------
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9 |
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10 | // Sample pragmas to cope with warnings. Please note the related line at
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11 | // the end of this function, used to pop the compiler diagnostics status.
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12 | #pragma GCC diagnostic push
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13 | #pragma GCC diagnostic ignored "-Wunused-parameter"
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14 | #pragma GCC diagnostic ignored "-Wmissing-declarations"
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15 | #pragma GCC diagnostic ignored "-Wreturn-type"
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16 |
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17 | int main(int argc, char* argv[])
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18 | {
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19 | GPIO_InitTypeDef GPIO_InitStructure;
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20 | TIM_TimeBaseInitTypeDef TIM_TimeBase_InitStructure;
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21 | NVIC_InitTypeDef NVIC_InitStructure;
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22 |
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23 | SystemInit();
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24 |
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25 | RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOE, ENABLE);
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26 | RCC_APB1PeriphClockCmd(RCC_APB1Periph_TIM2, ENABLE);
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27 |
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28 | GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
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29 | GPIO_InitStructure.GPIO_Pin = GPIO_Pin_5;
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30 | GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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31 | GPIO_Init(GPIOE, &GPIO_InitStructure);
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32 |
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33 | TIM_TimeBase_InitStructure.TIM_ClockDivision = TIM_CKD_DIV1;
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34 | TIM_TimeBase_InitStructure.TIM_CounterMode = TIM_CounterMode_Up;
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35 | TIM_TimeBase_InitStructure.TIM_Period = 1999;
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36 | TIM_TimeBase_InitStructure.TIM_Prescaler = 17999;
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37 | TIM_TimeBaseInit(TIM2, &TIM_TimeBase_InitStructure);
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38 | TIM_ITConfig(TIM2, TIM_IT_Update, ENABLE);
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39 |
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40 | NVIC_InitStructure.NVIC_IRQChannel = TIM2_IRQn;
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41 | NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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42 | NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
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43 | NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
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44 | NVIC_Init(&NVIC_InitStructure);
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45 |
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46 | TIM_Cmd(TIM2, ENABLE);
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47 |
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48 | // Short loop.
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49 | while (1)
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50 | {
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51 |
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52 | }
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53 | return 0;
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54 | }
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55 |
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56 | extern "C" void TIM2_IRQHandler(void)
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57 | {
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58 | TIM_ClearITPendingBit(TIM2, TIM_IT_Update);
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59 | if (GPIO_ReadOutputDataBit(GPIOE, GPIO_Pin_5))
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60 | {
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61 | GPIO_WriteBit(GPIOE, GPIO_Pin_5, Bit_RESET);
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62 | }
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63 | else
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64 | {
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65 | GPIO_WriteBit(GPIOE, GPIO_Pin_5, Bit_SET);
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66 | }
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67 | }
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68 |
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69 | #pragma GCC diagnostic pop
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70 |
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71 | // ----------------------------------------------------------------------------
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