/**
****************************************************************************************
* @brief Serves the receive data available interrupt requests. It clears the requests and
* executes the callback function.
*
* @return void
****************************************************************************************
*/
static void uart_sps_rec_data_avail_isr(void)
{
void (*callback) (uint8_t, uint32_t) = NULL;
uint32_t sent_bytes = 0;
while (uart_data_rdy_getf())
{
// Read the received in the FIFO
readData = uart_rxdata_getf();
#if (UART_SW_FLOW_ENABLED)
if(readData == UART_XON_BYTE)
{
//callback function will tell application that XOFF is received
*uart_sps_env.rx.state = UART_XON;
}
else if(readData == UART_XOFF_BYTE)
{
//callback function will tell application that XON is received
*uart_sps_env.rx.state = UART_XOFF;
app_override_ble_xoff();
}
else
#endif /*UART_SW_FLOW_ENABLED*/
{
//put data in buffer
*uart_sps_env.rx.bufptr = readData;
//update RX parameters
uart_sps_env.rx.size--;
sent_bytes++;
uart_sps_env.rx.bufptr++;
}
// Check if all expected data have been received
if (uart_sps_env.rx.size == 0)
{
// Reset RX parameters
uart_sps_env.rx.bufptr = NULL;
// Retrieve callback pointer
callback = uart_sps_env.rx.callback;
if(callback != NULL)
{
// Clear callback pointer
uart_sps_env.rx.callback = NULL;
// Call handler
callback(UART_STATUS_OK, sent_bytes);
}
else
{
ASSERT_ERR(0);
}
// Exit loop
break;
}
}
}
/**
****************************************************************************************
* @brief Checks if there are available data in FIFO. It is called by uart timeout
* interrupt.
*
* @return void
****************************************************************************************
*/
static void uart_sps_timeout_data_avail_isr(void)
{
void (*callback) (uint8_t, uint32_t);
uint32_t sent_bytes = 0;
//get remaining data
while (uart_data_rdy_getf())
{
// Read the received in the FIFO
readData = uart_rxdata_getf();
#if (UART_SW_FLOW_ENABLED)
if(readData == UART_XON_BYTE)
{
//callback function will return that a XON is received
*uart_sps_env.rx.state = UART_XON;
}
else if(readData == UART_XOFF_BYTE)
{
//callback function will return that a XON is received
*uart_sps_env.rx.state = UART_XOFF;
app_override_ble_xoff();
}
else
#endif /*UART_SW_FLOW_ENABLED*/
{
//put data in buffer
*uart_sps_env.rx.bufptr = readData;
//update RX parameters
uart_sps_env.rx.size--;
sent_bytes++;
uart_sps_env.rx.bufptr++;
}
}
*uart_sps_env.rx.bufptr = 0; //terminate pointer
// Reset RX parameters
uart_sps_env.rx.bufptr = NULL;
uart_sps_env.rx.size = 0;
// Retrieve callback pointer
callback = uart_sps_env.rx.callback;
// Clear callback pointer
uart_sps_env.rx.callback = NULL;
// Call callback
callback(UART_STATUS_TIMEOUT, sent_bytes);
}
void gpio0_callback(void)
{
NVIC_DisableIRQ(GPIO0_IRQn); // Disable this interrupt
if(GPIO_GetPinStatus(UART1_CTS_PORT, UART1_CTS_PIN)==FALSE)
{
app_override_ble_xon();
//Set interrupt to detect rising edge of CTS
GPIO_EnableIRQ(UART1_CTS_PORT, UART1_CTS_PIN, GPIO0_IRQn, 0, 1, 0);
}
else if(GPIO_GetPinStatus(UART1_CTS_PORT, UART1_CTS_PIN)==TRUE)
{
app_override_ble_xoff();
//Set interrupt to detect falling edge of CTS
GPIO_EnableIRQ(UART1_CTS_PORT, UART1_CTS_PIN, GPIO0_IRQn, 1, 0, 0);
}
NVIC_ClearPendingIRQ(GPIO0_IRQn);
NVIC_EnableIRQ(GPIO0_IRQn); // Enable this interrupt
}
