Posted on May 23, 2012 at 02:45
yes, I just need the instruction ofPutting the info on LCD
Can you post the code you have now, or review the STM32L15x firmware library and the example code for the Discovery and Eval boards.
Here's a 5 minute hack of the example code to monitor PA3
/**
******************************************************************************
* @file LCD/LCD_SegmentsDrive/main.c MODIFIED
* @author MCD Application Team
* @version V1.1.1
* @date 13-April-2012
* @brief Main program body
******************************************************************************
* Shamelessly Modified from
* STM32L1xx_StdPeriph_Lib_V1.1.1\Project\STM32L1xx_StdPeriph_Examples\LCD\LCD_SegmentsDrive
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include ''stm32l1xx.h''
#ifdef USE_STM32L152D_EVAL
#include ''stm32l152d_eval_glass_lcd.h''
#else
#include ''stm32l152_eval_glass_lcd.h''
#endif
/** @addtogroup STM32L1xx_StdPeriph_Examples
* @{
*/
/** @addtogroup LCD_SegmentsDrive
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define SCROLL_SPEED 5000 /* Low value gives higher speed */
#define SCROLL_NUM 20
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
void RCC_Config(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program.
* @param None
* @retval None
*/
int main(void)
{
GPIO_InitTypeDef GPIO_InitStructure;
uint16_t current, last;
/*!< At this stage the microcontroller clock setting is already configured,
this is done through SystemInit() function which is called from startup
file (startup_stm32l1xx_xx.s) before to branch to application main.
To reconfigure the default setting of SystemInit() function, refer to
system_stm32l1xx.c file
*/
/* System Clocks Configuration */
RCC_Config();
/* LCD GLASS Initialization */
LCD_GLASS_Init();
#ifdef USE_STM32L152D_EVAL
LCD_GLASS_DisplayLogo(ENABLE);
#endif
/* GPIOA Periph clock enable */
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);
/* Configure PA3 as output pushpull mode */
GPIO_InitStructure.GPIO_Pin = GPIO_Pin_3;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(GPIOA, &GPIO_InitStructure);
last = !GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_3);
/* Infinite loop */
while (1)
{
current = GPIO_ReadInputDataBit(GPIOA, GPIO_Pin_3);
if (current != last)
{
if (current == 0)
LCD_GLASS_ScrollString(''PA3 LOW'', SCROLL_NUM, SCROLL_SPEED);
else
LCD_GLASS_ScrollString(''PA3 HIGH'', SCROLL_NUM, SCROLL_SPEED);
last = current;
}
}
}
/**
* @brief Configures the different system and peripherals clocks.
* @param None
* @retval None
*/
void RCC_Config(void)
{
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR, ENABLE);
/* Allow access to the RTC */
PWR_RTCAccessCmd(ENABLE);
/* Reset Backup Domain */
RCC_RTCResetCmd(ENABLE);
RCC_RTCResetCmd(DISABLE);
/*!< LSE Enable */
RCC_LSEConfig(RCC_LSE_ON);
/*!< Wait till LSE is ready */
while (RCC_GetFlagStatus(RCC_FLAG_LSERDY) == RESET)
{}
/*!< LCD Clock Source Selection */
RCC_RTCCLKConfig(RCC_RTCCLKSource_LSE);
}
#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
* @retval None
*/
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
'', file, line) */
/* Infinite loop */
while (1)
{
}
}
#endif
