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https://github.com/Telecominfraproject/OpenCellular.git
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701bbe8764
Fix bug in which we were using the wrong index to the USART register macros. This bug was recently introduced in: https://chromium-review.googlesource.com/208488 BUG=none BRANCH=none TEST=load code on zinger and verify serial console works Change-Id: I03142a8cafb68e0cbbcba4b720e7ec89fe20110b Signed-off-by: Alec Berg <alecaberg@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/209557 Reviewed-by: Anton Staaf <robotboy@chromium.org>
38 lines
767 B
C
38 lines
767 B
C
/* Copyright (c) 2014 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Synchronous UART debug printf */
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#include "common.h"
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#include "printf.h"
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#include "registers.h"
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#include "util.h"
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static int debug_txchar(void *context, int c)
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{
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if (c == '\n') {
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while (!(STM32_USART_SR(UARTN_BASE) & STM32_USART_SR_TXE))
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;
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STM32_USART_TDR(UARTN_BASE) = '\r';
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}
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/* Wait for space to transmit */
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while (!(STM32_USART_SR(UARTN_BASE) & STM32_USART_SR_TXE))
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;
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STM32_USART_TDR(UARTN_BASE) = c;
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return 0;
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}
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void debug_printf(const char *format, ...)
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{
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va_list args;
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va_start(args, format);
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vfnprintf(debug_txchar, NULL, format, args);
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va_end(args);
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}
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