therm Changeset - a50c5fa22b95 · protofusion repositories

Changeset - a50c5fa22b95

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Ethan Zonca - 10 years ago 2014-07-14 22:10:53
ez@ethanzonca.com

Added GPIO reads

1 file changed with 30 insertions and 4 deletions:

main.c

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main.c

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@@ @@ -2,12 +2,21 @@ @@
 #include "stm32l100c_discovery.h"
 #include "ssd1306.h"
 #define LED_POWER GPIOB,GPIO_Pin_9
 #define LED_STAT  GPIOA,GPIO_Pin_15
 // TODO: Grab buttonpresses with interrupts
 #define SW_BTN  GPIOB, GPIO_Pin_3
 #define SW_UP   GPIOB, GPIO_Pin_7
 #define SW_DOWN GPIOB, GPIO_Pin_6
 #define SW_LEFT GPIOB, GPIO_Pin_5
 #define SW_RIGHT GPIOB, GPIO_Pin_4
 static __IO uint32_t TimingDelay;
 void init_gpio();
 void init_spi();
 int main(void)
@@ @@ -22,25 +31,42 @@ int main(void) @@
     SysTick_Config(RCC_Clocks.HCLK_Frequency / 1000);
     GPIO_ResetBits(LED_STAT);
     Delay(100);
     init_gpio();
     init_spi();
     ssd1306_Init();
     ssd1306_DrawPoint(3,3,1);
     ssd1306_DrawPoint(5,5,0);
     GPIO_SetBits(LED_POWER);
     Delay(500);
     GPIO_ResetBits(LED_POWER);
 RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
     init_spi();
     while(1)
+    {
         ssd1306_DrawPoint(5,5,0);
         // TODO: Grab buttonpresses with interrupts
         uint8_t sw_btn = GPIO_ReadInputDataBit(SW_BTN);
         uint8_t sw_up = GPIO_ReadInputDataBit(SW_UP);
         uint8_t sw_down = GPIO_ReadInputDataBit(SW_DOWN);
         uint8_t sw_left = GPIO_ReadInputDataBit(SW_LEFT);
         uint8_t sw_right = GPIO_ReadInputDataBit(SW_RIGHT);
         SPI_I2S_SendData(SPI2,0xFA);
         SPI_I2S_SendData(SPI1,0xFA);
         if(!GPIO_ReadInputDataBit(GPIOB, GPIO_Pin_3)) {
             GPIO_ToggleBits(LED_STAT);
+        }
 //        ssd1306_DrawPoint(5,5,0);
         GPIO_SetBits(LED_POWER);
         Delay(150);
         GPIO_ResetBits(LED_POWER);
         Delay(150);
+    }
+}
@@ @@ -53,12 +79,13 @@ int main(void) @@
 void Delay(__IO uint32_t nTime)
+{
   TimingDelay = nTime;
   while(TimingDelay != 0);
+}
 /**
   * @brief  Decrements the TimingDelay variable.
   * @param  None
   * @retval None
   */
 void TimingDelay_Decrement(void)
@@ @@ -67,13 +94,12 @@ void TimingDelay_Decrement(void) @@
+  {
     TimingDelay--;
+  }
+}
 void init_spi(void)
+{
     SPI_InitTypeDef  SPI_InitStructure;
     // OLED IC
     SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Tx;
@@ @@ -142,13 +168,13 @@ void init_gpio(void) { @@
   GPIO_Init(GPIOA, &GPIO_InitStruct);
   /*Configure GPIO pin : PB */
   GPIO_InitStruct.GPIO_Pin = GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5|GPIO_Pin_6
                           |GPIO_Pin_7;
   GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN;
-  GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;
+  GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_UP;
   GPIO_Init(GPIOB, &GPIO_InitStruct);
   /** SPI1 GPIO Configuration
   PA5   ------> SPI1_SCK
   PA7   ------> SPI1_MOSI
   */

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