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https://github.com/Telecominfraproject/OpenCellular.git
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130a2d6a9a
Using minimal runtime to fit the charger flash and RAM size. It is currently more an experiment than the final layout written in the stone. Signed-off-by: Vincent Palatin <vpalatin@chromium.org> BRANCH=none BUG=none TEST=run on STM32F051 Discovery with limited RAM and Flash to mimic STM32F031. Change-Id: I10ee1decfd1f1448edbc909f0e997367921c4b53 Reviewed-on: https://chromium-review.googlesource.com/189405 Reviewed-by: Vic Yang <victoryang@chromium.org> Commit-Queue: Vincent Palatin <vpalatin@chromium.org> Tested-by: Vincent Palatin <vpalatin@chromium.org>
42 lines
780 B
C
42 lines
780 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) & STM32_USART_SR_TXE))
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;
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STM32_USART_TDR(UARTN) = '\r';
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}
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/* Wait for space to transmit */
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while (!(STM32_USART_SR(UARTN) & STM32_USART_SR_TXE))
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;
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STM32_USART_TDR(UARTN) = 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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void panic(const char *msg)
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{
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}
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