#include "main.h"
#include "stm32l100c_discovery.h"
#include "ssd1306.h"
#define LED_POWER GPIOB,GPIO_Pin_9
#define LED_STAT GPIOA,GPIO_Pin_15
static __IO uint32_t TimingDelay;
uint8_t BlinkSpeed = 0;
void init_gpio();
void init_spi();
/* Main */
int main(void)
{
// Hopefully init clocks
SystemInit();
RCC_ClocksTypeDef RCC_Clocks;
/* Configure LED3 and LED4 on STM32L100C-Discovery */
STM_EVAL_LEDInit(LED3);
STM_EVAL_LEDInit(LED4);
/* SysTick end of count event each 1ms */
//SysTick end of count event each 1ms
RCC_GetClocksFreq(&RCC_Clocks);
SysTick_Config(RCC_Clocks.HCLK_Frequency / 1000);
/* Initiate Blink Speed variable */
BlinkSpeed = 1;
GPIO_ResetBits(LED_STAT);
Delay(100);
init_gpio();
init_spi();
// SPI_I2S_SendData(SPI1, 0x1);
/* Init lcd driver */
// SSD1303_Init();
//SSD1302_Init();
// SSD1303_DrawPoint(3,3,1);
// SSD1303_DrawPoint(5,5,0);
//testme
GPIO_SetBits(LED_POWER);
// GPIO_SetBits(LED_STAT);
// STM_EVAL_LEDOn(LED4);
Delay(500);
GPIO_ResetBits(LED_POWER);
// GPIO_ResetBits(LED_STAT);
// STM_EVAL_LEDOff(LED4);
while(1)
/* Turn on LD4 Blue LED during 1s each time User button is pressed */
/* Turn on LD0 Blue LED during 1s each time User button is pressed */
//STM_EVAL_LEDOn(LED4);
//STM_EVAL_LEDOn(LED3);
/* wait for 1s */
Delay(150);
/* Turn off LD4 Blue LED after 1s each time User button is pressed */
//STM_EVAL_LEDOff(LED4);
}
/**
* @brief Inserts a delay time.
* @param nTime: specifies the delay time length, in 1 ms.
* @retval None
*/
void Delay(__IO uint32_t nTime)
TimingDelay = nTime;
while(TimingDelay != 0);
* @brief Decrements the TimingDelay variable.
* @param None
void TimingDelay_Decrement(void)
if (TimingDelay != 0x00)
TimingDelay--;
void init_spi(void) {
SPI_InitTypeDef SPI_InitStructure;
// OLED IC
SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Tx;
SPI_InitStructure.SPI_Mode = SPI_Mode_Master;
SPI_InitStructure.SPI_DataSize = SPI_DataSize_8b;
SPI_InitStructure.SPI_CPOL = SPI_CPOL_High;
SPI_InitStructure.SPI_CPHA = SPI_CPHA_2Edge;
SPI_InitStructure.SPI_NSS = SPI_NSS_Soft;
SPI_InitStructure.SPI_BaudRatePrescaler = SPI_BaudRatePrescaler_64;
SPI_InitStructure.SPI_FirstBit = SPI_FirstBit_MSB;
SPI_InitStructure.SPI_CRCPolynomial = 7;
SPI_Init(SPI1, &SPI_InitStructure);
SPI_Cmd(SPI1, ENABLE); /* Enable the SPI */
// MAX IC
SPI_InitStructure.SPI_Direction = SPI_Direction_1Line_Rx;
SPI_Init(SPI2, &SPI_InitStructure);
SPI_Cmd(SPI2, ENABLE); /* Enable the SPI */
void init_gpio(void) {
GPIO_InitTypeDef GPIO_InitStruct;
/** Configure pins as
* Analog
* Input
* Output
* EVENT_OUT
* EXTI
/*Enable or disable the APB peripheral clock */
// Enable SPI clocks
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SPI1, ENABLE);
RCC_APB1PeriphClockCmd(RCC_APB1Periph_SPI2, ENABLE);
// Enable GPIO clocks
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOC|RCC_AHBPeriph_GPIOB|RCC_AHBPeriph_GPIOA, ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_DMA1, ENABLE); // EMZ TODO get the right ones
/*Configure GPIO pin : PC */
@@ -173,96 +159,97 @@ void init_gpio(void) {
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_400KHz;
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_Init(GPIOB, &GPIO_InitStruct);
/** SPI1 GPIO Configuration
PA5 ------> SPI1_SCK
PA7 ------> SPI1_MOSI
/*Enable or disable the AHB peripheral clock */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
/*Configure GPIO pin : PA */
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_5|GPIO_Pin_7;
GPIO_InitStruct.GPIO_OType = GPIO_OType_PP;
/*Configure GPIO pin alternate function */
GPIO_PinAFConfig(GPIOA, GPIO_PinSource5, GPIO_AF_SPI1);
GPIO_PinAFConfig(GPIOA, GPIO_PinSource7, GPIO_AF_SPI1);
/** SPI2 GPIO Configuration
PB13 ------> SPI2_SCK
PB14 ------> SPI2_MISO
PB15 ------> SPI2_MOSI
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_13|GPIO_Pin_14|GPIO_Pin_15;
GPIO_PinAFConfig(GPIOB, GPIO_PinSource13, GPIO_AF_SPI2);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource14, GPIO_AF_SPI2);
GPIO_PinAFConfig(GPIOB, GPIO_PinSource15, GPIO_AF_SPI2);
/** USB GPIO Configuration
PA11 ------> USB_DM
PA12 ------> USB_DP
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_11|GPIO_Pin_12;
#ifdef USE_FULL_ASSERT
* @brief Reports the name of the source file and the source line number
* where the assert_param error has occurred.
* @param file: pointer to the source file name
* @param line: assert_param error line source number
void assert_failed(uint8_t* file, uint32_t line)
/* User can add his own implementation to report the file name and line number,
ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
/* Infinite loop */
while (1)
{}
#endif
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