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SiLabs Pearl: Use any free UART for stdio 

Remove limitation that only a specific UART can be used for the
USB board controller serial line.
pull/1501/head
Mikko Polojarvi 2015-12-07 13:49:34 +02:00 committed by Steven Cooreman
parent 86376495a6
commit b8ab9fbfed
1 changed files with 8 additions and 2 deletions
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10
libraries/mbed/targets/hal/TARGET_Silicon_Labs/TARGET_EFM32/serial_api.c
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@ -496,6 +496,7 @@ void serial_init(serial_t *obj, PinName tx, PinName rx)
{
uint32_t baudrate;
uint32_t allow_leuart = true;
uint32_t uart_for_stdio = false;
#ifdef _SILICON_LABS_32B_PLATFORM_2
if((tx == STDIO_UART_TX) && (rx == STDIO_UART_RX)) {
@ -520,8 +521,13 @@ void serial_init(serial_t *obj, PinName tx, PinName rx)
CMU_ClockEnable(serial_get_clock(obj), true);
/* Limitations of board controller: CDC port only supports 115kbaud */
if((tx == STDIO_UART_TX) && (rx == STDIO_UART_RX) && (obj->serial.periph.uart == (USART_TypeDef*)STDIO_UART )) {
if((tx == STDIO_UART_TX) && (rx == STDIO_UART_RX)
#ifndef _SILICON_LABS_32B_PLATFORM_2
&& (obj->serial.periph.uart == (USART_TypeDef*)STDIO_UART )
#endif
) {
baudrate = 115200;
uart_for_stdio = true;
} else {
baudrate = 9600;
}
@ -552,7 +558,7 @@ void serial_init(serial_t *obj, PinName tx, PinName rx)
}
/* If this is the UART to be used for stdio, copy it to the stdio_uart struct */
if (obj->serial.periph.uart == (USART_TypeDef*)STDIO_UART ) {
if(uart_for_stdio) {
stdio_uart_inited = 1;
memcpy(&stdio_uart, obj, sizeof(serial_t));
}