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SiLabs Pearl: Serial HAL USART/LEUART pin routing 

Serial pin routing for Pearl. Note that this currently requires
the pins to be in the same "location", even though this is not
needed by the Pearl HW.
pull/1501/head
Mikko Polojarvi 2015-10-15 13:02:16 +03:00 committed by Steven Cooreman
parent d238a83042
commit e3e385e16d
1 changed files with 24 additions and 0 deletions
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24
libraries/mbed/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/serial_api.c
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@ -448,11 +448,23 @@ void serial_init(serial_t *obj, PinName tx, PinName rx)
/* Enable pins for UART at correct location */ /* Enable pins for UART at correct location */
if(LEUART_REF_VALID(obj->serial.periph.leuart)) { if(LEUART_REF_VALID(obj->serial.periph.leuart)) {
#ifdef _LEUART_ROUTE_LOCATION_SHIFT
obj->serial.periph.leuart->ROUTE = LEUART_ROUTE_RXPEN | LEUART_ROUTE_TXPEN | (obj->serial.location << _LEUART_ROUTE_LOCATION_SHIFT); obj->serial.periph.leuart->ROUTE = LEUART_ROUTE_RXPEN | LEUART_ROUTE_TXPEN | (obj->serial.location << _LEUART_ROUTE_LOCATION_SHIFT);
#else
obj->serial.periph.leuart->ROUTELOC0 = (obj->serial.location << _LEUART_ROUTELOC0_TXLOC_SHIFT) |
(obj->serial.location << _LEUART_ROUTELOC0_RXLOC_SHIFT);
obj->serial.periph.leuart->ROUTEPEN = LEUART_ROUTEPEN_RXPEN | LEUART_ROUTEPEN_TXPEN;
#endif
obj->serial.periph.leuart->IFC = LEUART_IFC_TXC; obj->serial.periph.leuart->IFC = LEUART_IFC_TXC;
obj->serial.periph.leuart->CTRL |= LEUART_CTRL_RXDMAWU | LEUART_CTRL_TXDMAWU; obj->serial.periph.leuart->CTRL |= LEUART_CTRL_RXDMAWU | LEUART_CTRL_TXDMAWU;
} else { } else {
#ifdef _USART_ROUTE_LOCATION_SHIFT
obj->serial.periph.uart->ROUTE = USART_ROUTE_RXPEN | USART_ROUTE_TXPEN | (obj->serial.location << _USART_ROUTE_LOCATION_SHIFT); obj->serial.periph.uart->ROUTE = USART_ROUTE_RXPEN | USART_ROUTE_TXPEN | (obj->serial.location << _USART_ROUTE_LOCATION_SHIFT);
#else
obj->serial.periph.uart->ROUTELOC0 = (obj->serial.location << _USART_ROUTELOC0_TXLOC_SHIFT) |
(obj->serial.location << _USART_ROUTELOC0_RXLOC_SHIFT);
obj->serial.periph.uart->ROUTEPEN = USART_ROUTEPEN_RXPEN | USART_ROUTEPEN_TXPEN;
#endif
obj->serial.periph.uart->IFC = USART_IFC_TXC; obj->serial.periph.uart->IFC = USART_IFC_TXC;
} }
@ -587,7 +599,13 @@ void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_b
LEUART_Init(obj->serial.periph.leuart, &init); LEUART_Init(obj->serial.periph.leuart, &init);
/* Re-enable pins for UART at correct location */ /* Re-enable pins for UART at correct location */
#ifdef _LEUART_ROUTE_LOCATION_SHIFT
obj->serial.periph.leuart->ROUTE = LEUART_ROUTE_RXPEN | LEUART_ROUTE_TXPEN | (obj->serial.location << _LEUART_ROUTE_LOCATION_SHIFT); obj->serial.periph.leuart->ROUTE = LEUART_ROUTE_RXPEN | LEUART_ROUTE_TXPEN | (obj->serial.location << _LEUART_ROUTE_LOCATION_SHIFT);
#else
obj->serial.periph.leuart->ROUTELOC0 = (obj->serial.location << _LEUART_ROUTELOC0_TXLOC_SHIFT) |
(obj->serial.location << _LEUART_ROUTELOC0_RXLOC_SHIFT);
obj->serial.periph.leuart->ROUTEPEN = LEUART_ROUTEPEN_RXPEN | LEUART_ROUTEPEN_TXPEN;
#endif
/* Re-enable interrupts */ /* Re-enable interrupts */
if(was_enabled != 0) { if(was_enabled != 0) {
@ -632,7 +650,13 @@ void serial_format(serial_t *obj, int data_bits, SerialParity parity, int stop_b
USART_InitAsync(obj->serial.periph.uart, &init); USART_InitAsync(obj->serial.periph.uart, &init);
/* Re-enable pins for UART at correct location */ /* Re-enable pins for UART at correct location */
#ifdef _USART_ROUTE_LOCATION_SHIFT
obj->serial.periph.uart->ROUTE = USART_ROUTE_RXPEN | USART_ROUTE_TXPEN | (obj->serial.location << _USART_ROUTE_LOCATION_SHIFT); obj->serial.periph.uart->ROUTE = USART_ROUTE_RXPEN | USART_ROUTE_TXPEN | (obj->serial.location << _USART_ROUTE_LOCATION_SHIFT);
#else
obj->serial.periph.uart->ROUTELOC0 = (obj->serial.location << _USART_ROUTELOC0_TXLOC_SHIFT) |
(obj->serial.location << _USART_ROUTELOC0_RXLOC_SHIFT);
obj->serial.periph.uart->ROUTEPEN = USART_ROUTEPEN_RXPEN | USART_ROUTEPEN_TXPEN;
#endif
/* Re-enable interrupts */ /* Re-enable interrupts */
if(was_enabled != 0) { if(was_enabled != 0) {