84 lines
2.8 KiB
C
84 lines
2.8 KiB
C
/******************************************************************************
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* The MIT License
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*
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* Copyright (c) 2010 Perry Hung (from libmaple/util.c).
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* Copyright (c) 2012 LeafLabs, LLC.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*****************************************************************************/
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/*
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* STM32F1 implementations for libmaple/util.c hooks
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*
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* These need more love and attention before being made public API
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* (this includes being easily overridable by user code).
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*/
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#include <libmaple/nvic.h>
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#include <libmaple/gpio.h>
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#include <libmaple/stm32.h>
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#include <libmaple/timer.h>
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#include <libmaple/adc.h>
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#include <libmaple/usart.h>
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/* Failed ASSERT()s send out a message using this USART config. */
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#ifndef ERROR_USART
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#define ERROR_USART USART1
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#define ERROR_USART_BAUD 9600
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#define ERROR_TX_PORT GPIOA
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#define ERROR_TX_PIN 2
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#endif
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/*
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* Disables all peripheral interrupts except USB (when available),
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* turns off commonly-used peripherals. Called by __error() with
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* global interrupts disabled.
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*/
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void __lm_error(void) {
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/* Turn off peripheral interrupts */
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nvic_irq_disable_all();
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/* Turn off timers */
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timer_disable_all();
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/* Turn off ADC */
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adc_disable_all();
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/* Turn off all USARTs */
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usart_disable_all();
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#if STM32_HAVE_USB
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/* Turn the USB interrupt back on so the bootloader keeps on functioning */
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nvic_irq_enable(NVIC_USB_HP_CAN_TX);
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nvic_irq_enable(NVIC_USB_LP_CAN_RX0);
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#endif
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}
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/*
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* Enable the error USART for writing.
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*/
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usart_dev* __lm_enable_error_usart() {
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gpio_set_mode(ERROR_TX_PORT, ERROR_TX_PIN, GPIO_AF_OUTPUT_PP);
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usart_init(ERROR_USART);
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usart_set_baud_rate(ERROR_USART, USART_USE_PCLK, ERROR_USART_BAUD);
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return ERROR_USART;
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}
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