aboutsummaryrefslogtreecommitdiff
path: root/src/platforms/stlink/dfu_upgrade.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/platforms/stlink/dfu_upgrade.c')
-rw-r--r--src/platforms/stlink/dfu_upgrade.c125
1 files changed, 125 insertions, 0 deletions
diff --git a/src/platforms/stlink/dfu_upgrade.c b/src/platforms/stlink/dfu_upgrade.c
new file mode 100644
index 0000000..4a3648a
--- /dev/null
+++ b/src/platforms/stlink/dfu_upgrade.c
@@ -0,0 +1,125 @@
+/*
+ * 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"
+uint32_t app_address = 0x08000000;
+
+static uint8_t rev;
+static uint16_t led_idle_run;
+static uint32_t led2_state = 0;
+
+void dfu_detach(void)
+{
+ /* Disconnect USB cable by resetting USB Device
+ and pulling USB_DP low*/
+ rcc_periph_reset_pulse(RST_USB);
+ rcc_periph_clock_enable(RCC_USB);
+ rcc_periph_clock_enable(RCC_GPIOA);
+ gpio_clear(GPIOA, GPIO12);
+ gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
+ GPIO_CNF_OUTPUT_OPENDRAIN, GPIO12);
+ /* Pull PB0 (T_NRST) low
+ */
+ rcc_periph_clock_enable(RCC_GPIOB);
+ gpio_set_mode(GPIOB, GPIO_MODE_OUTPUT_2_MHZ,
+ GPIO_CNF_OUTPUT_OPENDRAIN, GPIO0);
+ gpio_clear(GPIOB, GPIO0);
+ SCB_VTOR = 0;
+ scb_reset_core();
+}
+
+void stlink_set_rev(void)
+{
+ int i;
+
+ /* 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_periph_clock_enable(RCC_GPIOC);
+ 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:
+ led_idle_run = GPIO8;
+ break;
+ default:
+ led_idle_run = GPIO9;
+ }
+ gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
+ GPIO_CNF_OUTPUT_PUSHPULL, led_idle_run);
+}
+
+int main(void)
+{
+
+ rcc_clock_setup_in_hse_8mhz_out_72mhz();
+
+ stlink_set_rev();
+
+ systick_set_clocksource(STK_CSR_CLKSOURCE_AHB_DIV8);
+ systick_set_reload(900000);
+
+ dfu_protect(UPD_MODE);
+
+ /* 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_periph_reset_pulse(RST_USB);
+ rcc_periph_clock_enable(RCC_USB);
+ rcc_periph_clock_enable(RCC_GPIOA);
+ 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, UPD_MODE);
+
+ 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);
+ gpio_set(GPIOA, led_idle_run);
+ } else {
+ gpio_set_mode(GPIOA, GPIO_MODE_INPUT,
+ GPIO_CNF_INPUT_ANALOG, led_idle_run);
+ }
+ led2_state++;
+ }
+}