/**
* @brief EXTI line detection callbacks
* @param GPIO_Pin: Specifies the pins connected EXTI line
* @retval None
*/
void HAL_GPIO_EXTI_Callback(uint16_t GPIO_Pin)
{
if(GPIO_Pin == SC_OFF_PIN)
{
/* Toggle LED2..4 */
BSP_LED_Toggle(LED2);
BSP_LED_Toggle(LED3);
BSP_LED_Toggle(LED4);
if (CardInserted == 0)
{
/* Smartcard detected */
CardInserted = 1;
/* Enable CMDVCC */
SC_PowerCmd(ENABLE);
/* Reset the card */
SC_Reset(GPIO_PIN_RESET);
}
else
{
/* Smartcard removed */
CardInserted = 0;
/* Enable CMDVCC */
SC_PowerCmd(DISABLE);
}
}
else
{
/* Smartcard removed */
CardInserted = 0;
}
}
/**
* @brief This function handles External lines 9 to 5 interrupt request.
* @param None
* @retval None
*/
void EXTI9_5_IRQHandler(void)
{
if(Get_SmartCardStatus() == 0)
{
if(EXTI_GetITStatus(EXTI_Line8) != RESET)
{
/* Clear the EXTI Line 8 */
EXTI_ClearITPendingBit(EXTI_Line8);
}
if(EXTI_GetITStatus(EXTI_Line7) != RESET)
{
/* SEL function */
Set_SELStatus();
/* Clear the EXTI Line 7 */
EXTI_ClearITPendingBit(EXTI_Line7);
}
}
else if(Get_SmartCardStatus() == 1)
{
if(EXTI_GetITStatus(SC_EXTI) != RESET)
{
/* Clear SC EXTIT Line Pending Bit */
EXTI_ClearITPendingBit(SC_EXTI);
/* Smartcard detected */
Set_CardInserted();
/* Power ON the card */
SC_PowerCmd(ENABLE);
/* Reset the card */
SC_Reset(Bit_RESET);
}
}
if(EXTI_GetITStatus(EXTI_Line8) != RESET)
{
/* Clear the EXTI Line 8 */
EXTI_ClearITPendingBit(EXTI_Line8);
}
}
/**
* @brief This function handles the smartcard detection interrupt request.
* @param None
* @retval None
*/
void SC_OFF_EXTI_IRQHandler(void)
{
if(EXTI_GetITStatus(SC_OFF_EXTI_LINE) != RESET)
{
/* Clear EXTI Line Pending Bit */
EXTI_ClearITPendingBit(SC_OFF_EXTI_LINE);
/* Toggle LED1..4 */
STM_EVAL_LEDToggle(LED1);
STM_EVAL_LEDToggle(LED2);
STM_EVAL_LEDToggle(LED3);
STM_EVAL_LEDToggle(LED4);
/* Smartcard detected */
CardInserted = 1;
/* Enable CMDVCC */
SC_PowerCmd(ENABLE);
/* Reset the card */
SC_Reset(Bit_RESET);
}
}
/**
* @brief Configure the CMDVCC state for right detection of Card Insertion
* @param None
* @retval None
*/
void SC_ConfigDetection (void)
{
EXTI_InitTypeDef EXTI_InitStructure;
GPIO_InitTypeDef GPIO_InitStructure;
NVIC_InitTypeDef NVIC_InitStructure;
/* Enable GPIO clock */
RCC_AHBPeriphClockCmd(SC_OFF_GPIO_CLK | SC_CMDVCC_GPIO_CLK |
SC_3_5V_GPIO_CLK | SC_RESET_GPIO_CLK, ENABLE);
/* Enable SYSCFG clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
/* Configure Smartcard CMDVCC pin */
GPIO_InitStructure.GPIO_Pin = SC_CMDVCC_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
GPIO_Init(SC_CMDVCC_GPIO_PORT, &GPIO_InitStructure);
/* Configure Smartcard Reset pin */
GPIO_InitStructure.GPIO_Pin = SC_RESET_PIN;
GPIO_Init(SC_RESET_GPIO_PORT, &GPIO_InitStructure);
/* Configure Smartcard 3/5V pin */
GPIO_InitStructure.GPIO_Pin = SC_3_5V_PIN;
GPIO_Init(SC_3_5V_GPIO_PORT, &GPIO_InitStructure);
/* Select 5V */
SC_VoltageConfig(SC_VOLTAGE_5V);
/* Disable CMDVCC */
SC_PowerCmd(DISABLE);
/* Set RSTIN HIGH */
SC_Reset(Bit_SET);
/* Configure Smartcard OFF pin */
GPIO_InitStructure.GPIO_Pin = SC_OFF_PIN;
GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
GPIO_Init(SC_OFF_GPIO_PORT, &GPIO_InitStructure);
/* Configure EXTI line connected to Smartcard OFF Pin */
SYSCFG_EXTILineConfig(SC_OFF_EXTI_PORT_SOURCE, SC_OFF_EXTI_PIN_SOURCE);
EXTI_ClearITPendingBit(SC_OFF_EXTI_LINE);
EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
EXTI_InitStructure.EXTI_Line = SC_OFF_EXTI_LINE;
EXTI_InitStructure.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStructure);
/* Clear the SC_OFF_EXTI_IRQn Pending Bit */
NVIC_ClearPendingIRQ(SC_OFF_EXTI_IRQn);
NVIC_InitStructure.NVIC_IRQChannel = SC_OFF_EXTI_IRQn;
NVIC_InitStructure.NVIC_IRQChannelPriority = 3;
NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStructure);
}
