1.25.5.13 1.26.4.13 DBGU_ReadThresholdSet Function
C
/* Ring buffer mode */
void DBGU_ReadThresholdSet(uint32_t nBytesThreshold)
Summary
This API allows the application to set a threshold level on the number of bytes of data available in the receive buffer
Description
This API allows the application to set a threshold level on the number of bytes of data available in the receive buffer. Once the threshold is reached a notification is given to the application if it is enabled.
Precondition
DBGU_Initialize must have been called for the associated DBGU instance.
Parameters
Param | Description |
---|---|
nBytesThreshold | Threshold value for number of bytes available in the receive buffer after which a notification must be given |
Returns
None
Example
uint8_t rxBuffer[50]; uint32_t nBytes; void usartReadEventHandler(DBGU_EVENT event, uintptr_t context ) { uint32_t nBytesAvailable = 0; if (event == DBGU_EVENT_READ_THRESHOLD_REACHED) { // Receiver should have the thershold number of bytes in the ring buffer nBytesAvailable = DBGU_ReadCountGet(); nBytesRead += DBGU_Read((uint8_t*)&rxBuffer[nBytesRead], nBytesAvailable); } } //----------------------------------------------------------// // Register a callback for read events DBGU_ReadCallbackRegister(usartReadEventHandler, (uintptr_t) NULL); // Set a threshold value to receive a callback after every 10 characters are received DBGU_ReadThresholdSet(10); // Enable RX event notifications DBGU_ReadNotificationEnable(true, false);
Remarks
None