Hi
I am using stm32l496 in lprun mode but the current consumption is equal to 1.2 mA while in run mode the current consumption is equal to 3 mA while in the datasheet, the current consumption in the lprun mode is about 220 uA.
how can I reduce the current?
i attached cube clock configuration and my code.
Thanks.
/*enable low power run mode*/
HAL_GPIO_WritePin(Temp_PWR_GPIO_Port,Temp_PWR_Pin,GPIO_PIN_SET);//power off Temp PWR
HAL_GPIO_WritePin(Press_PWR_GPIO_Port,Press_PWR_Pin,GPIO_PIN_SET);//power off Press PWR
HAL_SPI_MspDeInit(&hspi1);
HAL_GPIO_DeInit(TempAD_CS_GPIO_Port, TempAD_CS_Pin);
HAL_GPIO_DeInit(PressAD_CS_GPIO_Port,PressAD_CS_Pin);
SystemClock_Decrease();
HAL_PWREx_EnableLowPowerRunMode();
void SystemClock_Decrease(void)
{
RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
RCC_OscInitTypeDef RCC_OscInitStruct = {0};
/* MSI is enabled after System reset, activate PLL with MSI as source */
RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;
RCC_OscInitStruct.HSEState = RCC_HSE_OFF;
RCC_OscInitStruct.HSIState = RCC_HSI_ON;
RCC_OscInitStruct.MSIState = RCC_MSI_ON;
RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_0;
RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT;
RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* Select MSI as system clock source and configure the HCLK, PCLK1 and PCLK2
clocks dividers */
RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK;
RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_MSI;
RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
{
/* Initialization Error */
Error_Handler();
}
/* Disable HSI to reduce power consumption since MSI is used from that point */
__HAL_RCC_HSI_DISABLE();
}
