Hi,
The PSoC is acting as an I2C slave. When new data is received via Bluetooth the PSoC raises a pin, alterting the master that data is available. When the I2C read by the master is complete the PSoC sets the pin low.
My main loop:
for(;;)
{
handleComs();
/* Process BLE Events. This generates events in the callback function */
CyBle_ProcessEvents();
/* To achieve low power in the device */
LowPowerImplementation();
}
This is part of the BLE event handler where the interrupt pin is set high (active) to indicate new data was received via BLE:
case CYBLE_EVT_GATTS_WRITE_REQ:
/* This event is generated when the connected Central */
/* device sends a Write request. */
/* The parameter ‘eventParam’ contains the data written */
/* Extract the Write data sent by Client */
wrReqParam = (CYBLE_GATTS_WRITE_REQ_PARAM_T *) eventParam;
/* If the attribute handle of the characteristic written to
* is equal to that of PX Config characteristic, then extract
* the PX Config data */
if(CYBLE_PX_CONFIG_PX_CONFIG_CONTROL_CHAR_HANDLE ==
wrReqParam->handleValPair.attrHandle)
{
/* Store data in local array */
for(i=0;i<PX_CONFIG_DATA_SIZE;i++)
{
pxConfigData = wrReqParam->handleValPair.value.val;
i2cReadBuffer = wrReqParam->handleValPair.value.val;
}
/* Update the GATT DB for PX Config read characteristics*/
UpdatePxConfigcharacteristic(pxConfigData,
sizeof(pxConfigData),
CYBLE_PX_CONFIG_PX_CONFIG_CONTROL_CHAR_HANDLE);
}
/* Send the response to the write request received. */
CyBle_GattsWriteRsp(cyBle_connHandle);
BLE_INT_Write(1); //Set the PX Interrupt pin active
break;
.....
In handleComs, this is where the interrupt pin is set low (cleared) after the master read via I2C:
/* Read complete: expose buffer to master */
/*This is a READ BY THE Master of the BLE */
if (0u != (I2C_Slave_I2CSlaveStatus() & I2C_Slave_I2C_SSTAT_RD_CMPLT))
{
BLE_INT_Write(0); //Set the Interrupt pin inactive
/* Clear slave read buffer and status */
I2C_Slave_I2CSlaveClearReadBuf(); //just sets the read index to zero
(void) I2C_Slave_I2CSlaveClearReadStatus();
}
When I am debugging this works great. The BLE receives data, sets the pin high, the master reads, and the BLE sets the pin low. When I am NOT running the debugger the interrupt pin never gets set low,
Ideas?
Thanks
Rich
