108 lines
3.1 KiB
C
108 lines
3.1 KiB
C
/*
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* This file is part of the Black Magic Debug project.
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*
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* Copyright (C) 2011 Black Sphere Technologies Ltd.
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* Written by Gareth McMullin <gareth@blacksphere.co.nz>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/* This file implements the platform specific functions for the STM32
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* implementation.
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*/
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#include "general.h"
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#include "cdcacm.h"
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#include "usbuart.h"
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#include "morse.h"
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#include <libopencm3/stm32/rcc.h>
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#include <libopencm3/cm3/scb.h>
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#include <libopencm3/cm3/nvic.h>
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#include <libopencm3/stm32/exti.h>
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#include <libopencm3/stm32/usart.h>
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#include <libopencm3/stm32/syscfg.h>
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#include <libopencm3/usb/usbd.h>
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jmp_buf fatal_error_jmpbuf;
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void platform_init(void)
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{
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/* Check the USER button*/
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rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPAEN);
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if(gpio_get(GPIOA, GPIO0)) {
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platform_request_boot();
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scb_reset_core();
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}
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rcc_clock_setup_pll(&rcc_hse_8mhz_3v3[RCC_CLOCK_3V3_168MHZ]);
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/* Enable peripherals */
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rcc_peripheral_enable_clock(&RCC_AHB2ENR, RCC_AHB2ENR_OTGFSEN);
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rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPCEN);
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rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPDEN);
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rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_CRCEN);
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/* Set up USB Pins and alternate function*/
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gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE,
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GPIO9 | GPIO11 | GPIO12);
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gpio_set_af(GPIOA, GPIO_AF10, GPIO9 | GPIO11 | GPIO12);
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GPIOC_OSPEEDR &=~0xF30;
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GPIOC_OSPEEDR |= 0xA20;
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gpio_mode_setup(JTAG_PORT, GPIO_MODE_OUTPUT,
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GPIO_PUPD_NONE,
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TCK_PIN | TDI_PIN);
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gpio_mode_setup(JTAG_PORT, GPIO_MODE_INPUT,
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GPIO_PUPD_NONE, TMS_PIN);
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gpio_mode_setup(TDO_PORT, GPIO_MODE_INPUT,
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GPIO_PUPD_NONE,
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TDO_PIN);
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gpio_mode_setup(LED_PORT, GPIO_MODE_OUTPUT,
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GPIO_PUPD_NONE,
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LED_UART | LED_IDLE_RUN | LED_ERROR | LED_BOOTLOADER);
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platform_timing_init();
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usbuart_init();
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cdcacm_init();
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}
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void platform_srst_set_val(bool assert) { (void)assert; }
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bool platform_srst_get_val(void) { return false; }
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const char *platform_target_voltage(void)
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{
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return NULL;
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}
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void platform_request_boot(void)
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{
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/* Disconnect USB cable */
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usbd_disconnect(usbdev, 1);
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nvic_disable_irq(USB_IRQ);
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/* Assert blue LED as indicator we are in the bootloader */
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rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPDEN);
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gpio_mode_setup(LED_PORT, GPIO_MODE_OUTPUT,
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GPIO_PUPD_NONE, LED_BOOTLOADER);
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gpio_set(LED_PORT, LED_BOOTLOADER);
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/* Jump to the built in bootloader by mapping System flash */
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rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_SYSCFGEN);
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SYSCFG_MEMRM &= ~3;
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SYSCFG_MEMRM |= 1;
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}
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