132 lines
3.5 KiB
C
132 lines
3.5 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 ST-Link
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* implementation.
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*/
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#include <libopencm3/stm32/f1/rcc.h>
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#include <libopencm3/cm3/systick.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/usart.h>
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#include <libopencm3/usb/usbd.h>
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#include <libopencm3/stm32/f1/adc.h>
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#include "platform.h"
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#include "jtag_scan.h"
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#include <usbuart.h>
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#include <ctype.h>
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uint8_t running_status;
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volatile uint32_t timeout_counter;
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jmp_buf fatal_error_jmpbuf;
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int platform_init(void)
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{
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rcc_clock_setup_in_hse_8mhz_out_72mhz();
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/* Enable peripherals */
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rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USBEN);
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rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
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rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
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rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN);
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/* Setup GPIO ports */
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gpio_set_mode(TMS_PORT, GPIO_MODE_OUTPUT_50_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, TMS_PIN);
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gpio_set_mode(TCK_PORT, GPIO_MODE_OUTPUT_50_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, TCK_PIN);
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gpio_set_mode(TDI_PORT, GPIO_MODE_OUTPUT_50_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, TDI_PIN);
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gpio_set_mode(LED_PORT, GPIO_MODE_OUTPUT_2_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, LED_IDLE_RUN);
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/* Setup heartbeat timer */
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systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);
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systick_set_reload(900000); /* Interrupt us at 10 Hz */
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SCB_SHPR(11) &= ~((15 << 4) & 0xff);
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SCB_SHPR(11) |= ((14 << 4) & 0xff);
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systick_interrupt_enable();
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systick_counter_enable();
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usbuart_init();
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SCB_VTOR = 0x2000; // Relocate interrupt vector table here
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cdcacm_init();
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jtag_scan(NULL);
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return 0;
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}
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void platform_delay(uint32_t delay)
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{
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timeout_counter = delay;
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while(timeout_counter);
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}
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void sys_tick_handler(void)
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{
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if(running_status)
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gpio_toggle(LED_PORT, LED_IDLE_RUN);
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if(timeout_counter)
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timeout_counter--;
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}
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const char *morse_msg;
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void morse(const char *msg, char repeat)
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{
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(void)repeat;
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morse_msg = msg;
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}
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const char *platform_target_voltage(void)
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{
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return "unknown";
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}
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void disconnect_usb(void)
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{
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/* Disconnect USB cable by resetting USB Device and pulling USB_DP low*/
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rcc_peripheral_reset(&RCC_APB1RSTR, RCC_APB1ENR_USBEN);
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rcc_peripheral_clear_reset(&RCC_APB1RSTR, RCC_APB1ENR_USBEN);
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rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USBEN);
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rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
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gpio_clear(GPIOA, GPIO12);
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gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
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GPIO_CNF_OUTPUT_OPENDRAIN, GPIO12);
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}
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void assert_boot_pin(void)
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{
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rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
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gpio_set_mode(GPIOC, GPIO_MODE_OUTPUT_2_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, GPIO13);
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gpio_set(GPIOC, GPIO13);
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}
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void setup_vbus_irq(void){};
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