SWLINK: Add variant for the STM8S Discovery board
This commit is contained in:
Uwe Bonnes
parent
e880c553fb
commit
920ced062e
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== SWD Connector CN2 --
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1 VDD_TARGET VDD from application
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2 SWCLK SWD clock
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3 GND Ground
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4 SWDIO SWD data input/output
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5 NRST RESET of target MCU
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6 SWO Reserved
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@ -0,0 +1,19 @@
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CN5 JTAG Conn
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--------------
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JRST - o o - GND
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JTDI - o o - JTMS/SWDIO
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JTCK/SWCLK - o o - JTDO
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o - +3v3
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CN7 SWIM Conn
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--------------
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o - VDD - (V_target) - Unconnected/Floating if Jtag-PCB is broken away from STM8-Board
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o - USART1_RX - (SWIM_IN)
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STM8-Board <-- o - GND
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o - USART1_TX - (SWIM_RST)
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v
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@ -0,0 +1,36 @@
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CROSS_COMPILE ?= arm-none-eabi-
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CC = $(CROSS_COMPILE)gcc
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OBJCOPY = $(CROSS_COMPILE)objcopy
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CFLAGS += -mcpu=cortex-m3 -mthumb \
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-DSTM32F1 -DDISCOVERY_SWLINK -I../libopencm3/include \
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-I platforms/stm32
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LDFLAGS_BOOT = -lopencm3_stm32f1 -Wl,--defsym,_stack=0x20005000 \
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-Wl,-T,platforms/stm32/stlink.ld -nostartfiles -lc -lnosys \
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-Wl,-Map=mapfile -mthumb -mcpu=cortex-m3 -Wl,-gc-sections \
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-L../libopencm3/lib
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LDFLAGS = $(LDFLAGS_BOOT) -Wl,-Ttext=0x8002000
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VPATH += platforms/stm32
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SRC += cdcacm.c \
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platform.c \
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usbuart.c \
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all: blackmagic.bin blackmagic_dfu.bin blackmagic_dfu.hex
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blackmagic.bin: blackmagic
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$(OBJCOPY) -O binary $^ $@
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blackmagic_dfu: usbdfu.o dfucore.o dfu_f1.o
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$(CC) $^ -o $@ $(LDFLAGS_BOOT)
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blackmagic_dfu.bin: blackmagic_dfu
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$(OBJCOPY) -O binary $^ $@
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blackmagic_dfu.hex: blackmagic_dfu
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$(OBJCOPY) -O ihex $^ $@
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host_clean:
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-rm blackmagic.bin blackmagic_dfu blackmagic_dfu.bin blackmagic_dfu.hex
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Blackmagic for the STM8S Discovery Board
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========================================
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The board is a ST-Link V1 Board, but with access to JTAG pins accessible
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on CN5. This allows easy reprogramming and reuse of the JTAG header.
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Programmatical it seems indistinguishable from a e.g. STM32VL
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Discovery. So here avariant that uses CN5 for JTAG/SWD_TRACESWO and CN7 for
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UART.
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Force Bootloader entry is done with shorting CN7 Pin3/4 so PB6 read low while
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pulled up momentary by PB6.
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Reuse SWIM Pins for Uart (USART1)
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RX: CN7 Pin2 ->SWIM_IN (PB7)/USART1_RX / SWIM_IN(PB9)
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TX: CN7 Pin4 -> SWIM_RST_IN(PB6)/USART1_TX
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/*
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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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uint32_t data;
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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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/* Unmap JTAG Pins so we can reuse as GPIO */
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data = AFIO_MAPR;
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data &= ~AFIO_MAPR_SWJ_MASK;
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data |= AFIO_MAPR_SWJ_CFG_JTAG_OFF_SW_OFF;
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AFIO_MAPR = data;
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/* Setup JTAG GPIO ports */
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gpio_set_mode(TMS_PORT, GPIO_MODE_OUTPUT_10_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, TMS_PIN);
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gpio_set_mode(TCK_PORT, GPIO_MODE_OUTPUT_10_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, TCK_PIN);
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gpio_set_mode(TDI_PORT, GPIO_MODE_OUTPUT_10_MHZ,
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GPIO_CNF_OUTPUT_PUSHPULL, TDI_PIN);
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gpio_set_mode(TDO_PORT, GPIO_MODE_INPUT,
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GPIO_CNF_INPUT_FLOAT, TDO_PIN);
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gpio_set(NRST_PORT,NRST_PIN);
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gpio_set_mode(NRST_PORT, GPIO_MODE_INPUT,
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GPIO_CNF_INPUT_PULL_UPDOWN, NRST_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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/* Remap TIM2 TIM2_REMAP[1]
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* TIM2_CH1_ETR -> PA15 (TDI, set as output above)
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* TIM2_CH2 -> PB3 (TDO)
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*/
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data = AFIO_MAPR;
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data &= ~AFIO_MAPR_TIM2_REMAP_FULL_REMAP;
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data |= AFIO_MAPR_TIM2_REMAP_PARTIAL_REMAP1;
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AFIO_MAPR = data;
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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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uint32_t crl = GPIOA_CRL;
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rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
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/* Enable Pull on GPIOA1. We don't rely on the external pin
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* really pulled, but only on the value of the CNF register
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* changed from the reset value
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*/
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crl &= 0xffffff0f;
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crl |= 0x80;
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GPIOA_CRL = crl;
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}
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void setup_vbus_irq(void){};
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@ -0,0 +1,199 @@
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/*
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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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#ifndef __PLATFORM_H
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#define __PLATFORM_H
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#include <libopencm3/stm32/f1/gpio.h>
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#include <libopencm3/usb/usbd.h>
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#include <setjmp.h>
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#include <alloca.h>
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#include "gdb_packet.h"
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#define INLINE_GPIO
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#define CDCACM_PACKET_SIZE 64
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#define BOARD_IDENT "Black Magic Probe (SWLINK), (Firmware 1.5" VERSION_SUFFIX ", build " BUILDDATE ")"
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#define BOARD_IDENT_DFU "Black Magic (Upgrade), STM8S Discovery, (Firmware 1.5" VERSION_SUFFIX ", build " BUILDDATE ")"
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#define DFU_IDENT "Black Magic Firmware Upgrade (SWLINK)"
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#define DFU_IFACE_STRING "@Internal Flash /0x08000000/8*001Ka,56*001Kg"
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extern usbd_device *usbdev;
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#define CDCACM_GDB_ENDPOINT 1
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#define CDCACM_UART_ENDPOINT 3
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/* Pin mappings:
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*
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* nTRST = PB1
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* TDI = PA3
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* TMS = PA4 (input for SWDP)
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* TCK = PA5
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* TDO = PA6 (input)
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* nSRST = PA7 (input)
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*
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* USB cable pull-up: PA8
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* USB VBUS detect: PB13 -- New on mini design.
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* Enable pull up for compatibility.
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* Force DFU mode button: PB9 Low
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*/
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/* Hardware definitions... */
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#define TMS_PORT GPIOA
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#define TCK_PORT GPIOA
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#define TDI_PORT GPIOA
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#define TDO_PORT GPIOB
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#define NRST_PORT GPIOB
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#define TMS_PIN GPIO13
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#define TCK_PIN GPIO14
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#define TDI_PIN GPIO15
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#define TDO_PIN GPIO3
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#define NRST_PIN GPIO4
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#define SWDIO_PORT TMS_PORT
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#define SWCLK_PORT TCK_PORT
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#define SWDIO_PIN TMS_PIN
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#define SWCLK_PIN TCK_PIN
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#define LED_PORT GPIOA
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/* Use PC14 for a "dummy" uart led. So we can observere at least with scope*/
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#define LED_PORT_UART GPIOC
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#define LED_UART GPIO14
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#define TMS_SET_MODE() \
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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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#define SWDIO_MODE_FLOAT() \
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gpio_set_mode(SWDIO_PORT, GPIO_MODE_INPUT, \
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GPIO_CNF_INPUT_FLOAT, SWDIO_PIN);
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#define SWDIO_MODE_DRIVE() \
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gpio_set_mode(SWDIO_PORT, GPIO_MODE_OUTPUT_50_MHZ, \
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GPIO_CNF_OUTPUT_PUSHPULL, SWDIO_PIN);
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#define UART_PIN_SETUP() do \
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{ \
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AFIO_MAPR |= AFIO_MAPR_USART1_REMAP; \
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gpio_set_mode(USBUSART_PORT, GPIO_MODE_OUTPUT_2_MHZ, \
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GPIO_CNF_OUTPUT_ALTFN_PUSHPULL, USBUSART_TX_PIN); \
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} while (0)
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#define USB_DRIVER stm32f103_usb_driver
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#define USB_IRQ NVIC_USB_LP_CAN_RX0_IRQ
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#define USB_ISR usb_lp_can_rx0_isr
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/* Interrupt priorities. Low numbers are high priority.
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* For now USART1 preempts USB which may spin while buffer is drained.
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* TIM2 is used for traceswo capture and must be highest priority.
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*/
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#define IRQ_PRI_USB (2 << 4)
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#define IRQ_PRI_USBUSART (1 << 4)
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#define IRQ_PRI_USB_VBUS (14 << 4)
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#define IRQ_PRI_TRACE (0 << 4)
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#define USBUSART USART1
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#define USBUSART_CR1 USART1_CR1
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#define USBUSART_IRQ NVIC_USART1_IRQ
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#define USBUSART_APB_ENR RCC_APB2ENR
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#define USBUSART_CLK_ENABLE RCC_APB2ENR_USART1EN
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#define USBUSART_PORT GPIOB
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#define USBUSART_TX_PIN GPIO6
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#define USBUSART_ISR usart1_isr
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#define TRACE_TIM TIM2
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#define TRACE_TIM_CLK_EN() rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_TIM2EN)
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#define TRACE_IRQ NVIC_TIM2_IRQ
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#define TRACE_ISR tim2_isr
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#define TRACE_IC_IN TIM_IC_IN_TI2
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#define TRACE_TRIG_IN TIM_SMCR_TS_IT1FP2
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#define DEBUG(...)
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extern uint8_t running_status;
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extern volatile uint32_t timeout_counter;
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extern jmp_buf fatal_error_jmpbuf;
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extern const char *morse_msg;
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#define gpio_set_val(port, pin, val) do { \
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if(val) \
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gpio_set((port), (pin)); \
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else \
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gpio_clear((port), (pin)); \
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} while(0)
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#define led_idle_run GPIO8
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#define SET_RUN_STATE(state) {running_status = (state);}
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#define SET_IDLE_STATE(state) {gpio_set_val(LED_PORT, led_idle_run, state);}
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#define PLATFORM_SET_FATAL_ERROR_RECOVERY() {setjmp(fatal_error_jmpbuf);}
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#define PLATFORM_FATAL_ERROR(error) { \
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if(running_status) gdb_putpacketz("X1D"); \
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else gdb_putpacketz("EFF"); \
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running_status = 0; \
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target_list_free(); \
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longjmp(fatal_error_jmpbuf, (error)); \
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}
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int platform_init(void);
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void morse(const char *msg, char repeat);
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const char *platform_target_voltage(void);
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void platform_delay(uint32_t delay);
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/* <cdcacm.c> */
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void cdcacm_init(void);
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/* Returns current usb configuration, or 0 if not configured. */
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int cdcacm_get_config(void);
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int cdcacm_get_dtr(void);
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/* <platform.h> */
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void uart_usb_buf_drain(uint8_t ep);
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/* Use newlib provided integer only stdio functions */
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#define sscanf siscanf
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#define sprintf siprintf
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#define vasprintf vasiprintf
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#ifdef INLINE_GPIO
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static inline void _gpio_set(u32 gpioport, u16 gpios)
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{
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GPIO_BSRR(gpioport) = gpios;
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}
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#define gpio_set _gpio_set
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static inline void _gpio_clear(u32 gpioport, u16 gpios)
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{
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GPIO_BRR(gpioport) = gpios;
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}
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#define gpio_clear _gpio_clear
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static inline u16 _gpio_get(u32 gpioport, u16 gpios)
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{
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return (u16)GPIO_IDR(gpioport) & gpios;
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}
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#define gpio_get _gpio_get
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#endif
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#endif
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void disconnect_usb(void);
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void assert_boot_pin(void);
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@ -0,0 +1,94 @@
|
|||
/*
|
||||
* This file is part of the Black Magic Debug project.
|
||||
*
|
||||
* Copyright (C) 2013 Gareth McMullin <gareth@blacksphere.co.nz>
|
||||
*
|
||||
* This program is free software: you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation, either version 3 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
*/
|
||||
|
||||
#include <string.h>
|
||||
#include <libopencm3/cm3/systick.h>
|
||||
#include <libopencm3/stm32/rcc.h>
|
||||
#include <libopencm3/stm32/gpio.h>
|
||||
#include <libopencm3/cm3/scb.h>
|
||||
|
||||
#include "usbdfu.h"
|
||||
|
||||
void dfu_detach(void)
|
||||
{
|
||||
/* Disconnect USB cable by resetting USB Device
|
||||
and pulling USB_DP low*/
|
||||
rcc_peripheral_reset(&RCC_APB1RSTR, RCC_APB1ENR_USBEN);
|
||||
rcc_peripheral_clear_reset(&RCC_APB1RSTR, RCC_APB1ENR_USBEN);
|
||||
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USBEN);
|
||||
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
|
||||
gpio_clear(GPIOA, GPIO12);
|
||||
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
|
||||
GPIO_CNF_OUTPUT_OPENDRAIN, GPIO12);
|
||||
scb_reset_system();
|
||||
}
|
||||
|
||||
int main(void)
|
||||
{
|
||||
/* Check the force bootloader pin*/
|
||||
uint16_t pin_b;
|
||||
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
|
||||
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
|
||||
/* Switch PB5 (SWIM_RST_IN) up */
|
||||
gpio_set(GPIOB, GPIO5);
|
||||
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
|
||||
GPIO_CNF_OUTPUT_PUSHPULL, GPIO5);
|
||||
gpio_set(GPIOB, GPIO5);
|
||||
pin_b = gpio_get(GPIOB, GPIO6);
|
||||
/* Check state on PB6 ((SWIM_RST) and release PB5*/
|
||||
pin_b = gpio_get(GPIOB, GPIO6);
|
||||
gpio_set_mode(GPIOB, GPIO_MODE_INPUT,
|
||||
GPIO_CNF_INPUT_FLOAT, GPIO5);
|
||||
if(((GPIOA_CRL & 0x40) == 0x40) && pin_b)
|
||||
dfu_jump_app_if_valid();
|
||||
|
||||
dfu_protect_enable();
|
||||
|
||||
rcc_clock_setup_in_hse_8mhz_out_72mhz();
|
||||
systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);
|
||||
systick_set_reload(900000);
|
||||
|
||||
/* Handle USB disconnect/connect */
|
||||
/* Just in case: Disconnect USB cable by resetting USB Device
|
||||
* and pulling USB_DP low
|
||||
* Device will reconnect automatically as Pull-Up is hard wired*/
|
||||
rcc_peripheral_reset(&RCC_APB1RSTR, RCC_APB1ENR_USBEN);
|
||||
rcc_peripheral_clear_reset(&RCC_APB1RSTR, RCC_APB1ENR_USBEN);
|
||||
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USBEN);
|
||||
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
|
||||
gpio_clear(GPIOA, GPIO12);
|
||||
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
|
||||
GPIO_CNF_OUTPUT_OPENDRAIN, GPIO12);
|
||||
|
||||
/* Handle LED*/
|
||||
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
|
||||
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
|
||||
|
||||
systick_interrupt_enable();
|
||||
systick_counter_enable();
|
||||
|
||||
dfu_init(&stm32f103_usb_driver);
|
||||
|
||||
dfu_main();
|
||||
}
|
||||
|
||||
void sys_tick_handler(void)
|
||||
{
|
||||
gpio_toggle(GPIOA, GPIO8);
|
||||
}
|
||||
Loading…
Reference in New Issue