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authorUwe Bonnes2013-03-12 12:24:10 +0100
committerUwe Bonnes2013-03-12 12:24:10 +0100
commit920ced062eb0f50f26467868cda0d7fb0fd72413 (patch)
treeacaff31905f94cb4647e5b1b8aba4ed7a0d565ec /src/platforms/swlink/platform.c
parente880c553fb0326acef68296a9d1b4dc3b3affbb3 (diff)
SWLINK: Add variant for the STM8S Discovery board
Diffstat (limited to 'src/platforms/swlink/platform.c')
-rw-r--r--src/platforms/swlink/platform.c158
1 files changed, 158 insertions, 0 deletions
diff --git a/src/platforms/swlink/platform.c b/src/platforms/swlink/platform.c
new file mode 100644
index 0000000..33d4f12
--- /dev/null
+++ b/src/platforms/swlink/platform.c
@@ -0,0 +1,158 @@
+/*
+ * This file is part of the Black Magic Debug project.
+ *
+ * Copyright (C) 2011 Black Sphere Technologies Ltd.
+ * Written by 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/>.
+ */
+
+/* This file implements the platform specific functions for the ST-Link
+ * implementation.
+ */
+
+#include <libopencm3/stm32/f1/rcc.h>
+#include <libopencm3/cm3/systick.h>
+#include <libopencm3/cm3/scb.h>
+#include <libopencm3/cm3/nvic.h>
+#include <libopencm3/stm32/usart.h>
+#include <libopencm3/usb/usbd.h>
+#include <libopencm3/stm32/f1/adc.h>
+
+#include "platform.h"
+#include "jtag_scan.h"
+#include <usbuart.h>
+
+#include <ctype.h>
+
+uint8_t running_status;
+volatile uint32_t timeout_counter;
+
+jmp_buf fatal_error_jmpbuf;
+
+int platform_init(void)
+{
+ uint32_t data;
+ rcc_clock_setup_in_hse_8mhz_out_72mhz();
+
+ /* Enable peripherals */
+ rcc_peripheral_enable_clock(&RCC_APB1ENR, RCC_APB1ENR_USBEN);
+ rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
+ rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPBEN);
+ rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN);
+
+ /* Unmap JTAG Pins so we can reuse as GPIO */
+ data = AFIO_MAPR;
+ data &= ~AFIO_MAPR_SWJ_MASK;
+ data |= AFIO_MAPR_SWJ_CFG_JTAG_OFF_SW_OFF;
+ AFIO_MAPR = data;
+ /* Setup JTAG GPIO ports */
+ gpio_set_mode(TMS_PORT, GPIO_MODE_OUTPUT_10_MHZ,
+ GPIO_CNF_OUTPUT_PUSHPULL, TMS_PIN);
+ gpio_set_mode(TCK_PORT, GPIO_MODE_OUTPUT_10_MHZ,
+ GPIO_CNF_OUTPUT_PUSHPULL, TCK_PIN);
+ gpio_set_mode(TDI_PORT, GPIO_MODE_OUTPUT_10_MHZ,
+ GPIO_CNF_OUTPUT_PUSHPULL, TDI_PIN);
+
+ gpio_set_mode(TDO_PORT, GPIO_MODE_INPUT,
+ GPIO_CNF_INPUT_FLOAT, TDO_PIN);
+
+ gpio_set(NRST_PORT,NRST_PIN);
+ gpio_set_mode(NRST_PORT, GPIO_MODE_INPUT,
+ GPIO_CNF_INPUT_PULL_UPDOWN, NRST_PIN);
+
+ gpio_set_mode(LED_PORT, GPIO_MODE_OUTPUT_2_MHZ,
+ GPIO_CNF_OUTPUT_PUSHPULL, led_idle_run);
+
+ /* Remap TIM2 TIM2_REMAP[1]
+ * TIM2_CH1_ETR -> PA15 (TDI, set as output above)
+ * TIM2_CH2 -> PB3 (TDO)
+ */
+ data = AFIO_MAPR;
+ data &= ~AFIO_MAPR_TIM2_REMAP_FULL_REMAP;
+ data |= AFIO_MAPR_TIM2_REMAP_PARTIAL_REMAP1;
+ AFIO_MAPR = data;
+
+ /* Setup heartbeat timer */
+ systick_set_clocksource(STK_CTRL_CLKSOURCE_AHB_DIV8);
+ systick_set_reload(900000); /* Interrupt us at 10 Hz */
+ SCB_SHPR(11) &= ~((15 << 4) & 0xff);
+ SCB_SHPR(11) |= ((14 << 4) & 0xff);
+ systick_interrupt_enable();
+ systick_counter_enable();
+
+ usbuart_init();
+
+ SCB_VTOR = 0x2000; // Relocate interrupt vector table here
+
+ cdcacm_init();
+
+ jtag_scan(NULL);
+
+ return 0;
+}
+
+void platform_delay(uint32_t delay)
+{
+ timeout_counter = delay;
+ while(timeout_counter);
+}
+
+void sys_tick_handler(void)
+{
+ if(running_status)
+ gpio_toggle(LED_PORT, led_idle_run);
+
+ if(timeout_counter)
+ timeout_counter--;
+}
+
+const char *morse_msg;
+
+void morse(const char *msg, char repeat)
+{
+ (void)repeat;
+ morse_msg = msg;
+}
+
+const char *platform_target_voltage(void)
+{
+ return "unknown";
+}
+
+void disconnect_usb(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);
+}
+
+void assert_boot_pin(void)
+{
+ uint32_t crl = GPIOA_CRL;
+ rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_IOPAEN);
+ /* Enable Pull on GPIOA1. We don't rely on the external pin
+ * really pulled, but only on the value of the CNF register
+ * changed from the reset value
+ */
+ crl &= 0xffffff0f;
+ crl |= 0x80;
+ GPIOA_CRL = crl;
+}
+void setup_vbus_irq(void){};