Split out platform specific bootloader parts to separate files.

This commit is contained in:
Gareth McMullin 2013-03-12 19:04:10 +13:00
parent 55f161208d
commit 7c2e994381
11 changed files with 442 additions and 239 deletions

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@ -3,7 +3,8 @@ CC = $(CROSS_COMPILE)gcc
OBJCOPY = $(CROSS_COMPILE)objcopy
CFLAGS += -Istm32/include -mcpu=cortex-m3 -mthumb \
-DSTM32F4 -DF4DISCOVERY -I../libopencm3/include
-DSTM32F4 -DF4DISCOVERY -I../libopencm3/include \
-Iplatforms/stm32
LDFLAGS_BOOT = -lopencm3_stm32f4 -Wl,--defsym,_stack=0x20020000 \
-Wl,-T,platforms/stm32/f4discovery.ld -nostartfiles -lc -lnosys \

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@ -0,0 +1,75 @@
/*
* 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)
{
/* 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_CTRL_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,
GPIO9 | GPIO10 | GPIO11 | GPIO12);
gpio_set_af(GPIOA, GPIO_AF10, GPIO9 | GPIO10| GPIO11 | GPIO12);
dfu_init(&stm32f107_usb_driver);
dfu_main();
}
void sys_tick_handler(void)
{
gpio_toggle(GPIOD, GPIO12); /* Green LED on/off */
}

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@ -3,7 +3,8 @@ CC = $(CROSS_COMPILE)gcc
OBJCOPY = $(CROSS_COMPILE)objcopy
CFLAGS += -Istm32/include -mcpu=cortex-m3 -mthumb \
-DSTM32F1 -DBLACKMAGIC -I../libopencm3/include
-DSTM32F1 -DBLACKMAGIC -I../libopencm3/include \
-Iplatforms/stm32
LDFLAGS_BOOT = -lopencm3_stm32f1 -Wl,--defsym,_stack=0x20005000 \
-Wl,-T,platforms/stm32/blackmagic.ld -nostartfiles -lc -lnosys \

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@ -0,0 +1,72 @@
/*
* 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)
{
/* USB device must detach, we just reset... */
scb_reset_system();
}
int main(void)
{
/* Check the force bootloader pin*/
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
if(gpio_get(GPIOB, GPIO12))
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);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USBEN);
gpio_set_mode(GPIOA, GPIO_MODE_INPUT, 0, GPIO8);
systick_interrupt_enable();
systick_counter_enable();
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO11);
gpio_set_mode(GPIOB, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_FLOAT, GPIO2 | GPIO10);
dfu_init(&stm32f103_usb_driver);
gpio_set(GPIOA, GPIO8);
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
dfu_main();
}
void sys_tick_handler(void)
{
gpio_toggle(GPIOB, GPIO11); /* LED2 on/off */
}

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@ -3,7 +3,8 @@ CC = $(CROSS_COMPILE)gcc
OBJCOPY = $(CROSS_COMPILE)objcopy
CFLAGS += -mcpu=cortex-m3 -mthumb \
-DSTM32F1 -DDISCOVERY_STLINK -I../libopencm3/include
-DSTM32F1 -DDISCOVERY_STLINK -I../libopencm3/include \
-I platforms/stm32
LDFLAGS_BOOT = -lopencm3_stm32f1 -Wl,--defsym,_stack=0x20005000 \
-Wl,-T,platforms/stm32/stlink.ld -nostartfiles -lc -lnosys \
-Wl,-Map=mapfile -mthumb -mcpu=cortex-m3 -Wl,-gc-sections \

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@ -0,0 +1,136 @@
/*
* 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"
static uint8_t rev;
static uint16_t led_idle_run;
static uint32_t led2_state = 0;
static int stlink_test_nrst(void)
{
/* Test if JRST/NRST is pulled down*/
int i;
uint16_t nrst;
uint16_t pin;
/* First, get Board revision by pulling PC13/14 up. Read
* 11 for ST-Link V1, e.g. on VL Discovery, tag as rev 0
* 10 for ST-Link V2, e.g. on F4 Discovery, tag as rev 1
*/
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
gpio_set_mode(GPIOC, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_PULL_UPDOWN, GPIO14 | GPIO13);
gpio_set(GPIOC, GPIO14 | GPIO13);
for (i = 0; i < 100; i++)
rev = (~(gpio_get(GPIOC, GPIO14 | GPIO13)) >> 13) & 3;
switch (rev) {
case 0:
pin = GPIO1;
led_idle_run = GPIO8;
break;
default:
pin = GPIO0;
led_idle_run = GPIO9;
}
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, led_idle_run);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
gpio_set_mode(GPIOB, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_PULL_UPDOWN, pin);
gpio_set(GPIOB, pin);
for (i = 0; i < 100; i++)
nrst = gpio_get(GPIOB, pin);
return (nrst) ? 1 : 0;
}
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*/
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
/* Check value of GPIOA1 configuration. This pin is unconnected on
* STLink V1 and V2. If we have a value other than the reset value (0x4),
* we have a warm start and request Bootloader entry
*/
if(((GPIOA_CRL & 0x40) == 0x40) && stlink_test_nrst())
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);
systick_interrupt_enable();
systick_counter_enable();
dfu_init(&stm32f103_usb_driver);
dfu_main();
}
void sys_tick_handler(void)
{
if (rev == 0) {
gpio_toggle(GPIOA, led_idle_run);
} else {
if (led2_state & 1) {
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, led_idle_run);
} else {
gpio_set_mode(GPIOA, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_ANALOG, led_idle_run);
}
led2_state++;
}
}

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@ -1,234 +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 <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"
#if defined(DISCOVERY_STLINK)
uint8_t rev;
uint16_t led_idle_run;
u32 led2_state = 0;
int stlink_test_nrst(void) {
/* Test if JRST/NRST is pulled down*/
int i;
uint16_t nrst;
uint16_t pin;
/* First, get Board revision by pulling PC13/14 up. Read
* 11 for ST-Link V1, e.g. on VL Discovery, tag as rev 0
* 10 for ST-Link V2, e.g. on F4 Discovery, tag as rev 1
*/
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPCEN);
gpio_set_mode(GPIOC, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_PULL_UPDOWN, GPIO14|GPIO13);
gpio_set(GPIOC, GPIO14|GPIO13);
for (i=0; i< 100; i++)
rev = (~(gpio_get(GPIOC, GPIO14|GPIO13))>>13) & 3;
switch (rev)
{
case 0:
pin = GPIO1;
led_idle_run= GPIO8;
break;
default:
pin = GPIO0;
led_idle_run = GPIO9;
}
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, led_idle_run);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
gpio_set_mode(GPIOB, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_PULL_UPDOWN, pin);
gpio_set(GPIOB, pin);
for (i=0; i< 100; i++)
nrst = gpio_get(GPIOB, pin);
return (nrst)?1:0;
}
#endif
void dfu_detach(void)
{
#if defined (DISCOVERY_STLINK)
/* 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);
#else
/* USB device must detach, we just reset... */
#endif
scb_reset_system();
}
int main(void)
{
/* Check the force bootloader pin*/
#if defined (DISCOVERY_STLINK)
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
/* Check value of GPIOA1 configuration. This pin is unconnected on
* STLink V1 and V2. If we have a value other than the reset value (0x4),
* we have a warm start and request Bootloader entry
*/
if(((GPIOA_CRL & 0x40) == 0x40) && stlink_test_nrst()) {
#elif defined (STM32_CAN)
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
if(!gpio_get(GPIOA, GPIO0)) {
#elif defined (F4DISCOVERY)
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPAEN);
if(!gpio_get(GPIOA, GPIO0)) {
#elif defined (USPS_F407)
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPBEN);
/* Pull up an look if external pulled low or if we restart with PB1 low*/
GPIOB_PUPDR |= 4;
{
int i;
for(i=0; i<100000; i++) __asm__("NOP");
}
if(gpio_get(GPIOB, GPIO1)) {
#else
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
if(gpio_get(GPIOB, GPIO12)) {
#endif
dfu_jump_app_if_valid();
}
dfu_protect_enable();
/* Set up clock*/
#if defined (F4DISCOVERY) || defined(USPS_F407)
rcc_clock_setup_hse_3v3(&hse_8mhz_3v3[CLOCK_3V3_168MHZ]);
systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);
systick_set_reload(2100000);
#else
rcc_clock_setup_in_hse_8mhz_out_72mhz();
systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);
systick_set_reload(900000);
#endif
/* Handle USB disconnect/connect */
#if defined(DISCOVERY_STLINK)
/* 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);
#elif defined(F4DISCOVERY)
#elif defined(USPS_F407)
#elif defined(STM32_CAN)
#else
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USBEN);
gpio_set_mode(GPIOA, GPIO_MODE_INPUT, 0, GPIO8);
#endif
systick_interrupt_enable();
systick_counter_enable();
/* Handle LEDs */
#if defined(F4DISCOVERY)
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);
#elif defined(USPS_F407)
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPBEN);
gpio_clear(GPIOB, GPIO2);
gpio_mode_setup(GPIOB, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE,
GPIO2);
#elif defined (STM32_CAN)
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO0);
#else
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO11);
gpio_set_mode(GPIOB, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_FLOAT, GPIO2 | GPIO10);
#endif
/* Set up USB*/
#if defined(STM32_CAN)
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_OTGFSEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
dfu_init(&stm32f107_usb_driver);
#elif defined(STM32F2)||defined(STM32F4)
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,
GPIO9 | GPIO10 | GPIO11 | GPIO12);
gpio_set_af(GPIOA, GPIO_AF10, GPIO9 | GPIO10| GPIO11 | GPIO12);
dfu_init(&stm32f107_usb_driver);
#else
dfu_init(&stm32f103_usb_driver);
#endif
#if defined(BLACKMAGIC)
gpio_set(GPIOA, GPIO8);
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO8);
#endif
dfu_main();
}
void sys_tick_handler()
{
#if defined(DISCOVERY_STLINK)
if (rev == 0)
gpio_toggle(GPIOA, led_idle_run);
else
{
if (led2_state & 1)
gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, led_idle_run);
else
gpio_set_mode(GPIOA, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_ANALOG, led_idle_run);
led2_state++;
}
#elif defined (F4DISCOVERY)
gpio_toggle(GPIOD, GPIO12); /* Green LED on/off */
#elif defined (USPS_F407)
gpio_toggle(GPIOB, GPIO2); /* Green LED on/off */
#elif defined(STM32_CAN)
gpio_toggle(GPIOB, GPIO0); /* LED2 on/off */
#else
gpio_toggle(GPIOB, GPIO11); /* LED2 on/off */
#endif
}

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@ -3,7 +3,8 @@ CC = $(CROSS_COMPILE)gcc
OBJCOPY = $(CROSS_COMPILE)objcopy
CFLAGS += -Istm32/include -mcpu=cortex-m3 -mthumb \
-DSTM32F1 -DSTM32_CAN -I../libopencm3/include
-DSTM32F1 -DSTM32_CAN -I../libopencm3/include \
-Iplatforms/stm32
LDFLAGS_BOOT = -lopencm3_stm32f1 -Wl,--defsym,_stack=0x20010000 \
-Wl,-T,platforms/stm32/stm32_can.ld -nostartfiles -lc -lnosys \

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@ -0,0 +1,71 @@
/*
* 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)
{
/* USB device must detach, we just reset... */
scb_reset_system();
}
int main(void)
{
/* Check the force bootloader pin*/
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
if(!gpio_get(GPIOA, GPIO0))
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);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USBEN);
gpio_set_mode(GPIOA, GPIO_MODE_INPUT, 0, GPIO8);
systick_interrupt_enable();
systick_counter_enable();
gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
GPIO_CNF_OUTPUT_PUSHPULL, GPIO0);
/* Set up USB*/
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_OTGFSEN);
rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
dfu_init(&stm32f107_usb_driver);
dfu_main();
}
void sys_tick_handler(void)
{
gpio_toggle(GPIOB, GPIO0); /* LED2 on/off */
}

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@ -3,7 +3,8 @@ CC = $(CROSS_COMPILE)gcc
OBJCOPY = $(CROSS_COMPILE)objcopy
CFLAGS += -Istm32/include -mcpu=cortex-m3 -mthumb \
-DSTM32F4 -DUSPS_F407 -I../libopencm3/include
-DSTM32F4 -DUSPS_F407 -I../libopencm3/include \
-Iplatforms/stm32
LDFLAGS_BOOT = -lopencm3_stm32f4 -Wl,--defsym,_stack=0x20020000 \
-Wl,-T,platforms/stm32/f4discovery.ld -nostartfiles -lc -lnosys \

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@ -0,0 +1,78 @@
/*
* 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)
{
/* 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_IOPBEN);
/* Pull up an look if external pulled low or if we restart with PB1 low*/
GPIOB_PUPDR |= 4;
for (int i = 0; i < 100000; i++)
__asm__("NOP");
if (gpio_get(GPIOB, GPIO1))
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_CTRL_CLKSOURCE_AHB_DIV8);
systick_set_reload(2100000);
systick_interrupt_enable();
systick_counter_enable();
/* Handle LEDs */
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPBEN);
gpio_clear(GPIOB, GPIO2);
gpio_mode_setup(GPIOB, GPIO_MODE_OUTPUT, GPIO_PUPD_NONE,
GPIO2);
/* 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,
GPIO9 | GPIO10 | GPIO11 | GPIO12);
gpio_set_af(GPIOA, GPIO_AF10, GPIO9 | GPIO10| GPIO11 | GPIO12);
dfu_init(&stm32f107_usb_driver);
dfu_main();
}
void sys_tick_handler(void)
{
gpio_toggle(GPIOB, GPIO2); /* Green LED on/off */
}