IPC@CHIP Documentation - SC12 @CHIP-RTOS V1.10

within the ISR.
With API call DEV_NOTIFY_ISR the ISR should wakeup a user provided task, which receives the incoming data
from the device and moves the data into the TCP/IP stack. This task should use API call DEV_RECV_WAIT and
DEV_RECV_IFACE (see example below).
Instead of a creating a new task, it is also possible to use your program's main thread for receiving by having it
perform the MyReceiveTask() actions shown below.
If your device doesn't support interrupts, you could create a polling task (or again, simply use your program's main
thread for this purpose) which periodically checks your device for incoming data as illustrated in the
MyReceiveTask_Polling example below.
Important : An ISR must be installed as a RTOS ISR with the Install Interrupt Service Routine of the Hardware
API.
Generic examples for an ISR and a two forms of receiver task functions follow.
// Interrupt Service Routine
void interrupt MyDeviceISRHandler(void)
{
int receivedFrames;
int errorCode;
}
// Hardware specific: Check if there are incoming data packets available
// Wakeup receiver task
Dev_Notify_ISR(MyDevHandle, receivedFrames, 0, &errorCode); // C-Lib call
// Note: Issue no EOI here.
// (EOI for the ISR is issued inside of the CHIP-RTOS.)
// Generic example for a receiver task function, which waits for an event from ISR:
void huge MyReceiveTask(void)
{
int errorCode;
int statRecv;
// Optional: do some initialization
}
while(1)
{
// Wait for a wakeup from ISR
Dev_Recv_Wait(mydevdriver.IfaceHandle, &errorCode); // C-Lib call
}
// After wakeup received and move incoming data into the stack
do
{ // C-Lib call
statRecv = Dev_Recv_Interface(mydevdriver.IfaceHandle, &errorCode);
} while (statRecv != -1);
// Generic example for receiver task, polling for incoming data:
void huge MyReceiveTask_Polling(void)
{
int errorCode;
// Optional: do some initialization
// Wait for completion of interface installation (Intr 0xAC 0xA0)
while (install_done == 0)
{
RTX_Sleep_Time(10); // Go to sleep for a defined time.
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