/**
* Function documented in platform/uart.h
*/
otError otPlatUartDisable(void)
{
UARTDisable(UART0_BASE);
UARTIntUnregister(UART0_BASE);
UARTIntDisable(UART0_BASE, UART_INT_RX | UART_INT_RT);
IOCPortConfigureSet(IOID_2, IOC_PORT_GPIO, IOC_STD_INPUT);
IOCPortConfigureSet(IOID_3, IOC_PORT_GPIO, IOC_STD_INPUT);
PRCMPeripheralRunDisable(PRCM_PERIPH_UART0);
PRCMPeripheralSleepDisable(PRCM_PERIPH_UART0);
PRCMPeripheralDeepSleepDisable(PRCM_PERIPH_UART0);
PRCMLoadSet();
/**
* \warn this assumes that there are no other devices being used in the
* serial power domain
*/
PRCMPowerDomainOff(PRCM_DOMAIN_SERIAL);
return OT_ERROR_NONE;
}
/*
* ======== Power_releaseDependency ========
* Release a previously declared dependency.
*/
Void Power_releaseDependency(Power_Resource resourceID)
{
UInt8 parent;
UInt8 count;
UInt32 id;
UInt key;
/* disable interrupts */
key = Hwi_disable();
/* read and decrement the reference count */
count = ti_sysbios_family_arm_cc26xx_Power_refCount[resourceID];
Assert_isTrue(count != 0, Power_A_tooManyCallsReleaseDependency);
ti_sysbios_family_arm_cc26xx_Power_refCount[resourceID] = count - 1;
/* if this was the last dependency being released.., */
if (count == 1) {
/* deactivate this resource ... */
id = ti_sysbios_family_arm_cc26xx_Power_db[resourceID].driverlibID;
/* is resource a peripheral?... */
if (ti_sysbios_family_arm_cc26xx_Power_db[resourceID].flags
& PERIPH) {
PRCMPeripheralRunDisable(id);
PRCMPeripheralSleepDisable(id);
PRCMPeripheralDeepSleepDisable(id);
PRCMLoadSet();
while(!PRCMLoadGet()){};
}
/* else, does resource require a special handler?... */
else if (ti_sysbios_family_arm_cc26xx_Power_db[resourceID].flags
& SPECIAL) {
/* call the special handler */
ti_sysbios_family_arm_cc26xx_Power_resourceHandlers[id](DISABLE);
}
/* else resource is a power domain */
else {
PRCMPowerDomainOff(id);
while (PRCMPowerDomainStatus(id) != PRCM_DOMAIN_POWER_OFF) {};
}
/* propagate release up the dependency tree ... */
/* check for a first parent */
parent = ti_sysbios_family_arm_cc26xx_Power_db[resourceID].flags
& PARENTMASK;
/* if 1st parent, make recursive call to release that dependency */
if (parent != NOPARENT) {
Power_releaseDependency(parent);
}
/* check for a second parent */
parent = ti_sysbios_family_arm_cc26xx_Power_db[resourceID].flags2
& PARENTMASK;
/* if 2nd parent, make recursive call to release that dependency */
if (parent != NOPARENT) {
Power_releaseDependency(parent);
}
}
/* re-enable interrupts */
Hwi_restore(key);
}
