I want to know how to show how to use the energy harvesting feature based on the ST25DV-I2C-04K in combination with an STM32L476 MCU.I have noticed that there is a code named EH energy collection, can you power L476 to make it run normally?
void MX_NFC7_EH_Init(void)
{
ST25DVxxKC_EN_STATUS_E value_eh_dyn;
ST25DVxxKC_EH_MODE_STATUS_E value_eh_mode;
/* Configuration of X-NUCLEO-NFC07A1 */
/******************************************************************************/
/* Init of the Leds on X-NUCLEO-NFC07A1 board */
NFC07A1_LED_Init(GREEN_LED );
NFC07A1_LED_Init(BLUE_LED );
NFC07A1_LED_Init(YELLOW_LED );
NFC07A1_LED_On( GREEN_LED );
HAL_Delay( 300 );
NFC07A1_LED_On( BLUE_LED );
HAL_Delay( 300 );
NFC07A1_LED_On( YELLOW_LED );
HAL_Delay( 300 );
/* Init ST25DVxxKC driver */
while( NFC07A1_NFCTAG_Init(NFC07A1_NFCTAG_INSTANCE) != NFCTAG_OK );
/* Init User button to allow user to change EH configuration */
BSP_PB_Init( BUTTON_KEY, BUTTON_MODE_GPIO );
/* Init done */
NFC07A1_LED_Off( GREEN_LED );
HAL_Delay( 300 );
NFC07A1_LED_Off( BLUE_LED );
HAL_Delay( 300 );
NFC07A1_LED_Off( YELLOW_LED );
HAL_Delay( 300 );
/* Check status of Energy Harvesting static configuration */
NFC07A1_NFCTAG_ReadEHMode(NFC07A1_NFCTAG_INSTANCE, &value_eh_mode );
if( value_eh_mode == ST25DVXXKC_EH_ACTIVE_AFTER_BOOT )
{
/* Energy Harvesting is set after each boot, LED 1 is on */
NFC07A1_LED_On( GREEN_LED );
}
else
{
/* Energy Harvesting is reset after each boot, LED 1 is off */
NFC07A1_LED_Off( GREEN_LED );
}
/* Check status of Energy Harvesting static configuration */
NFC07A1_NFCTAG_GetEHENMode_Dyn(NFC07A1_NFCTAG_INSTANCE, &value_eh_dyn );
if( value_eh_dyn == ST25DVXXKC_DISABLE )
{
/* Energy Harvesting is disabled, LED 2 is on */
NFC07A1_LED_Off( BLUE_LED );
}
else
{
/* Energy Harvesting is activated, LED 2 is on */
NFC07A1_LED_On( BLUE_LED );
}
}
/**
* @brief Process of the NFC7 EH application
* @retval None
*/
void MX_NFC7_EH_Process(void)
{
ST25DVxxKC_PASSWD_t passwd;
ST25DVxxKC_EN_STATUS_E value_eh_dyn;
ST25DVxxKC_EH_MODE_STATUS_E value_eh_mode;
ST25DVxxKC_I2CSSO_STATUS_E i2csso;
uint32_t tick_start;
uint32_t tick_end;
/*Detect button press*/
if(BSP_PB_GetState( BUTTON_KEY ) == BUTTON_PRESSED)
{
tick_start = HAL_GetTick();
/* Debouncing */
HAL_Delay(50);
do
{
tick_end = HAL_GetTick();
} while ((BSP_PB_GetState( BUTTON_KEY ) == BUTTON_PRESSED) && (tick_end - tick_start) <= 1000);
if((tick_end - tick_start) > 1000)
{
/* Long Button press */
/* Wait until the button is released */
while ((BSP_PB_GetState( BUTTON_KEY ) == BUTTON_PRESSED));
/* Debouncing */
HAL_Delay(50);
/* When user button is released after 1s, toggle Energy Harvesting static configuration */
/* You need to present password to change static configuration */
NFC07A1_NFCTAG_ReadI2CSecuritySession_Dyn(NFC07A1_NFCTAG_INSTANCE, &i2csso );
if( i2csso == ST25DVXXKC_SESSION_CLOSED )
{
/* if I2C session is closed, present password to open session */
passwd.MsbPasswd = 0;
passwd.LsbPasswd = 0;
NFC07A1_NFCTAG_PresentI2CPassword(NFC07A1_NFCTAG_INSTANCE, passwd );
}
/* Toggle static configuration */
NFC07A1_NFCTAG_ReadEHMode(NFC07A1_NFCTAG_INSTANCE, &value_eh_mode );
if( value_eh_mode == ST25DVXXKC_EH_ACTIVE_AFTER_BOOT )
{
/* Let the user activate energy harvesting */
value_eh_mode = ST25DVXXKC_EH_ON_DEMAND;
NFC07A1_NFCTAG_WriteEHMode(NFC07A1_NFCTAG_INSTANCE, value_eh_mode );
NFC07A1_LED_Off( GREEN_LED );
}
else
{
/* Energy harvesting activated after Power On Reset */
value_eh_mode = ST25DVXXKC_EH_ACTIVE_AFTER_BOOT;
NFC07A1_NFCTAG_WriteEHMode(NFC07A1_NFCTAG_INSTANCE, value_eh_mode );
NFC07A1_LED_On( GREEN_LED );
}
}
else
{
/* Short Button press */
/* Button already released */
/* Debouncing */
HAL_Delay(50);
/* When user button is pressed, toggle Energy Harvesting dynamic configuration */
NFC07A1_NFCTAG_GetEHENMode_Dyn(NFC07A1_NFCTAG_INSTANCE, &value_eh_dyn );
if( value_eh_dyn == ST25DVXXKC_DISABLE )
{
/* Enable energy harvesting */
NFC07A1_NFCTAG_SetEHENMode_Dyn(NFC07A1_NFCTAG_INSTANCE);
NFC07A1_LED_On( BLUE_LED );
}
else
{
/* Disable energy harvesting */
NFC07A1_NFCTAG_ResetEHENMode_Dyn(NFC07A1_NFCTAG_INSTANCE);
NFC07A1_LED_Off( BLUE_LED );
}
}
}
}
#ifdef __cplusplus
}
#endif
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