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arch/arm/src/xmc4 UART: Enable RX/TX status and small fixes

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Alan Carvalho de Assis 2017-11-21 06:11:35 -06:00 committed by Gregory Nutt
parent 35a54d7a1e
commit 41b89e1bb4
1 changed files with 12 additions and 6 deletions
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18
arch/arm/src/xmc4/xmc4_lowputc.c
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@ -47,9 +47,11 @@
#include "up_internal.h"
#include "up_arch.h"
#include <debug.h>
#include "xmc4_config.h"
#include "chip/xmc4_usic.h"
#include "chip/xmc4_ports.h"
#include "chip/xmc4_pinmux.h"
#include "xmc4_usic.h"
#include "xmc4_gpio.h"
@ -286,11 +288,15 @@ int xmc4_uart_configure(enum usic_channel_e channel,
regval = USIC_PCR_ASCMODE_PLBIT | USIC_PCR_ASCMODE_SMD;
/* - Sampling point set equal to the half of the oversampling period */
/* Enable the receive and transmit status */
regval |= USIC_PCR_ASCMODE_RSTEN | USIC_PCR_ASCMODE_TSTEN;
/* Sampling point set equal to the half of the oversampling period */
regval |= USIC_PCR_ASCMODE_SP((UART_OVERSAMPLING >> 1) + 1);
/* - Configure the number of stop bits */
/* Configure the number of stop bits */
if (config->stop2)
{
@ -372,8 +378,8 @@ int xmc4_uart_configure(enum usic_channel_e channel,
* a data word
*/
regval &= ~(USIC_TBCTR_DPTR_MASK | USIC_TBCTR_LIMIT_MASK | USIC_RBCTR_SRBTEN |
USIC_TBCTR_SIZE_MASK | USIC_RBCTR_LOF);
regval &= ~(USIC_TBCTR_DPTR_MASK | USIC_TBCTR_LIMIT_MASK | USIC_TBCTR_STBTEN |
USIC_TBCTR_SIZE_MASK | USIC_TBCTR_LOF);
regval |= (USIC_TBCTR_DPTR(16) | USIC_TBCTR_LIMIT(1) | USIC_TBCTR_SIZE_16);
putreg32(regval, base + XMC4_USIC_TBCTR_OFFSET);
@ -386,8 +392,8 @@ int xmc4_uart_configure(enum usic_channel_e channel,
/* Configure receive FIFO.
*
* - DPTR = 0
* - LIMIT = 15
* - SIZE = 16
* - LIMIT = 16
* - SIZE = 15
* - LOF = 1, A standard receive buffer event occurs when the filling
* level equals the limit value and gets bigger due to the reception
* of a new data word