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f4_discovery: Clean up platform.h and Readme.

This commit is contained in:
Uwe Bonnes 2017-04-18 20:01:28 +02:00
parent 814eb0e3a2
commit a0e47c392b
4 changed files with 14 additions and 94 deletions
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4
src/platforms/f4discovery/Readme
View File

@ -1,6 +1,6 @@
System vs BMP Bootloader
========================
For the BMP bootloader, flashing qas not reliable. So we use the system
For the BMP bootloader, flashing was not reliable. So we use the system
bootloder unconditional.
Connections:
@ -17,7 +17,7 @@ PC6: TDO/TRACESWO
PC1: TRST
PC8: SRST
Blue Led: Indicator that system bootloader is entered via BMP
PD15/Blue Led: Indicator that system bootloader is entered via BMP
Bootstrapping the F4Discovery on-board ST-Link
==============================================

19
src/platforms/f4discovery/platform.c
View File

@ -42,7 +42,7 @@ jmp_buf fatal_error_jmpbuf;
void platform_init(void)
{
/* Check the USER button*/
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPAEN);
rcc_periph_clock_enable(RCC_GPIOA);
if(gpio_get(GPIOA, GPIO0)) {
platform_request_boot();
scb_reset_core();
@ -51,10 +51,10 @@ void platform_init(void)
rcc_clock_setup_hse_3v3(&hse_8mhz_3v3[CLOCK_3V3_48MHZ]);
/* Enable peripherals */
rcc_peripheral_enable_clock(&RCC_AHB2ENR, RCC_AHB2ENR_OTGFSEN);
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPCEN);
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPDEN);
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_CRCEN);
rcc_periph_clock_enable(RCC_OTGFS);
rcc_periph_clock_enable(RCC_GPIOC);
rcc_periph_clock_enable(RCC_GPIOD);
rcc_periph_clock_enable(RCC_CRC);
/* Set up USB Pins and alternate function*/
gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO11 | GPIO12);
@ -93,17 +93,16 @@ void platform_request_boot(void)
if (RCC_AHB2ENR & RCC_AHB2ENR_OTGFSEN) {
usbd_disconnect(usbdev, 1);
nvic_disable_irq(USB_IRQ);
rcc_peripheral_disable_clock(&RCC_AHB2ENR, RCC_AHB2ENR_OTGFSEN);
rcc_periph_clock_disable(RCC_OTGFS);
}
/* Assert blue LED as indicator we are in the bootloader */
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPDEN);
gpio_mode_setup(LED_PORT, GPIO_MODE_OUTPUT,
GPIO_PUPD_NONE, LED_BOOTLOADER);
gpio_set(LED_PORT, LED_BOOTLOADER);
/* Disable used ports beside PORTD.*/
rcc_peripheral_disable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPAEN);
rcc_peripheral_disable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPCEN);
rcc_periph_clock_disable(RCC_GPIOA);
rcc_periph_clock_disable(RCC_GPIOC);
rcc_periph_clock_disable(USBUSART_CLK);
/* Reset Systick.*/
systick_interrupt_disable();
@ -119,7 +118,7 @@ void platform_request_boot(void)
RCC_CFGR &= ~(RCC_CFGR_SWS_HSE | RCC_CFGR_SWS_PLL);
/* Map System flash at 0.*/
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_SYSCFGEN);
rcc_periph_clock_enable(RCC_SYSCFG);
SYSCFG_MEMRM &= ~3;
SYSCFG_MEMRM |= 1;
}

10
src/platforms/f4discovery/platform.h
View File

@ -32,8 +32,8 @@
#include <setjmp.h>
#define PLATFORM_HAS_TRACESWO
#define BOARD_IDENT "Black Magic Probe (F4Discovery), (Firmware " FIRMWARE_VERSION ")"
#define DFU_IDENT "Black Magic Firmware Upgrade (F4Discovery"
#define BOARD_IDENT "Black Magic Probe (F4Discovery), (Firmware " FIRMWARE_VERSION ")"
#define DFU_IDENT "Black Magic Firmware Upgrade (F4Discovery)"
/* Important pin mappings for STM32 implementation:
*
@ -42,7 +42,6 @@
* LED2 = PD12 (Red LED : Error)
* LED3 = PD15 (Blue LED : Bootloader active)
*
* TPWR = XXX (input) -- analogue on mini design ADC1, ch8
* nTRST = PC1
* SRST_OUT = PC8
* TDI = PC2
@ -51,10 +50,7 @@
* TDO = PC6 (input for TRACESWO
* nSRST =
*
* USB cable pull-up: PA8
* USB VBUS detect: PB13 -- New on mini design.
* Enable pull up for compatibility.
* Force DFU mode button: PB12
* Force DFU mode button: PA0
*/
/* Hardware definitions... */

75
src/platforms/f4discovery/usbdfu.c
View File

@ -1,75 +0,0 @@
/*
* 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 "general.h"
#include "usbdfu.h"
#include <libopencm3/cm3/systick.h>
#include <libopencm3/stm32/rcc.h>
#include <libopencm3/stm32/gpio.h>
#include <libopencm3/cm3/scb.h>
void dfu_detach(void)
{
/* USB device must detach, we just reset... */
scb_reset_system();
}
int main(void)
{
/* Check the force bootloader pin*/
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPAEN);
if(!gpio_get(GPIOA, GPIO0))
dfu_jump_app_if_valid();
dfu_protect_enable();
/* Set up clock*/
rcc_clock_setup_hse_3v3(&hse_8mhz_3v3[CLOCK_3V3_168MHZ]);
systick_set_clocksource(STK_CSR_CLKSOURCE_AHB_DIV8);
systick_set_reload(2100000);
systick_interrupt_enable();
systick_counter_enable();
/* Handle LEDs */
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPDEN);
gpio_clear(GPIOD, GPIO12 | GPIO13 | GPIO14 |GPIO15);
gpio_mode_setup(GPIOD, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE,
GPIO12 | GPIO13 | GPIO14 |GPIO15);
/* Set up USB*/
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_AHB2ENR, RCC_AHB2ENR_OTGFSEN);
/* Set up USB Pins and alternate function*/
gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE,
GPIO10 | GPIO11 | GPIO12);
gpio_set_af(GPIOA, GPIO_AF10, GPIO10 | GPIO11 | GPIO12);
dfu_init(&stm32f107_usb_driver);
dfu_main();
}
void sys_tick_handler(void)
{
gpio_toggle(GPIOD, GPIO12); /* Green LED on/off */
}