void I2C2_Handler(void)
{
SEGGER_SYSTEMVIEW_ISR_ENTER();
uint16_t mask = I2C2->I2C2_INTR_STAT_REG;
intr_handler(HW_I2C2, mask);
SEGGER_SYSTEMVIEW_ISR_EXIT();
}
void CALLBACK intr_async( ULONG_PTR sig ) {
CancelIo( intr_handle ); /* interrupt system calls */
if ( (uint32_t)sig == intr_sig ) { intr_handler( (uint32_t)sig ); }
}
int
main(int argc, char *argv[])
{
int r;
endpoint_t user, caller;
message m;
int ipc_status;
env_setargs(argc, argv);
r = i2cdriver_env_parse(&bus, &address, valid_addrs);
if (r < 0) {
log_warn(&log, "Expecting -args 'bus=X address=0xYY'\n");
log_warn(&log, "Example -args 'bus=1 address=0x24'\n");
return EXIT_FAILURE;
} else if (r > 0) {
log_warn(&log,
"Invalid slave address for device, expecting 0x24\n");
return EXIT_FAILURE;
}
sef_local_startup();
while (TRUE) {
/* Receive Message */
r = sef_receive_status(ANY, &m, &ipc_status);
if (r != OK) {
log_warn(&log, "sef_receive_status() failed\n");
continue;
}
log_trace(&log, "Got a message 0x%x from 0x%x\n", m.m_type,
m.m_source);
if (is_ipc_notify(ipc_status)) {
switch (m.m_source) {
case DS_PROC_NR:
/* bus driver changed state, update endpoint */
i2cdriver_handle_bus_update(&bus_endpoint, bus,
address);
break;
case HARDWARE:
intr_handler();
break;
default:
break;
}
/* Do not reply to notifications. */
continue;
}
caller = m.m_source;
user = m.USER_ENDPT;
/*
* Handle Message
*
* So far this driver only deals with notifications
* so it always replies to non-notifications with EINVAL.
*/
/* Send Reply */
m.m_type = TASK_REPLY;
m.REP_ENDPT = user;
m.REP_STATUS = EINVAL;
r = sendnb(caller, &m);
if (r != OK) {
log_warn(&log, "sendnb() failed\n");
continue;
}
}
return 0;
}
