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authorUwe Bonnes2013-01-15 16:55:24 +0100
committerUwe Bonnes2013-01-21 11:02:44 +0100
commit72ca77af530047c47646d0450f8a759d2ed595a1 (patch)
treede3cbbef3feb65c1ab2cc291201d27741824fda5 /src/platforms/stm32_can
parent313a24b31676e4d74362f9280e54d467815e7514 (diff)
stm32_can: Changes to get blackmagic to work
Diffstat (limited to 'src/platforms/stm32_can')
-rw-r--r--src/platforms/stm32_can/Makefile.inc35
-rw-r--r--src/platforms/stm32_can/platform.c197
-rw-r--r--src/platforms/stm32_can/platform.h180
3 files changed, 412 insertions, 0 deletions
diff --git a/src/platforms/stm32_can/Makefile.inc b/src/platforms/stm32_can/Makefile.inc
new file mode 100644
index 0000000..6365ce1
--- /dev/null
+++ b/src/platforms/stm32_can/Makefile.inc
@@ -0,0 +1,35 @@
+CROSS_COMPILE ?= arm-none-eabi-
+CC = $(CROSS_COMPILE)gcc
+OBJCOPY = $(CROSS_COMPILE)objcopy
+
+CFLAGS += -Istm32/include -mcpu=cortex-m3 -mthumb \
+ -DSTM32F1 -DSTM32_CAN -I../libopencm3/include
+
+LDFLAGS_BOOT = -lopencm3_stm32f1 -Wl,--defsym,_stack=0x20010000 \
+ -Wl,-T,platforms/stm32/stm32_can.ld -nostartfiles -lc -lnosys \
+ -Wl,-Map=mapfile -mthumb -mcpu=cortex-m3 -Wl,-gc-sections \
+ -L../libopencm3/lib
+LDFLAGS = $(LDFLAGS_BOOT) -Wl,-Ttext=0x8002000
+
+VPATH += platforms/stm32
+
+SRC += cdcacm.c \
+ platform.c \
+ usbuart.c \
+
+all: blackmagic.bin blackmagic_dfu.bin blackmagic_dfu.hex
+
+blackmagic.bin: blackmagic
+ $(OBJCOPY) -O binary $^ $@
+
+blackmagic_dfu: usbdfu.o
+ $(CC) $^ -o $@ $(LDFLAGS_BOOT)
+
+blackmagic_dfu.bin: blackmagic_dfu
+ $(OBJCOPY) -O binary $^ $@
+
+blackmagic_dfu.hex: blackmagic_dfu
+ $(OBJCOPY) -O ihex $^ $@
+
+host_clean:
+ -rm blackmagic.bin blackmagic_dfu blackmagic_dfu.bin blackmagic_dfu.hex
diff --git a/src/platforms/stm32_can/platform.c b/src/platforms/stm32_can/platform.c
new file mode 100644
index 0000000..e93d3be
--- /dev/null
+++ b/src/platforms/stm32_can/platform.c
@@ -0,0 +1,197 @@
+/*
+ * 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 STM32
+ * 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/exti.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;
+
+static void morse_update(void);
+
+int platform_init(void)
+{
+
+ /* Enable peripherals */
+ rcc_peripheral_enable_clock(&RCC_AHBENR, RCC_AHBENR_OTGFSEN);
+ 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_IOPCEN);
+ rcc_peripheral_enable_clock(&RCC_APB2ENR, RCC_APB2ENR_AFIOEN);
+
+ rcc_clock_setup_in_hse_8mhz_out_72mhz();
+ /* Setup GPIO ports */
+ gpio_set_mode(TMS_PORT, GPIO_MODE_OUTPUT_50_MHZ,
+ GPIO_CNF_OUTPUT_PUSHPULL,
+ TMS_PIN);
+
+ gpio_set_mode(TCK_PORT, GPIO_MODE_OUTPUT_50_MHZ,
+ GPIO_CNF_OUTPUT_PUSHPULL,
+ TCK_PIN | TDI_PIN);
+
+ gpio_set_mode(TCK_PORT, GPIO_MODE_INPUT,
+ GPIO_CNF_INPUT_FLOAT,
+ TDO_PIN);
+
+ gpio_set_mode(LED_PORT, GPIO_MODE_OUTPUT_2_MHZ,
+ GPIO_CNF_OUTPUT_PUSHPULL,
+ LED_UART | LED_IDLE_RUN | LED_ERROR);
+
+ /* 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--;
+
+ morse_update();
+}
+
+
+/* Morse code patterns and lengths */
+static const struct {
+ uint16_t code;
+ uint8_t bits;
+} morse_letter[] = {
+ { 0b00011101, 8}, // 'A' .-
+ { 0b000101010111, 12}, // 'B' -...
+ { 0b00010111010111, 14}, // 'C' -.-.
+ { 0b0001010111, 10}, // 'D' -..
+ { 0b0001, 4}, // 'E' .
+ { 0b000101110101, 12}, // 'F' ..-.
+ { 0b000101110111, 12}, // 'G' --.
+ { 0b0001010101, 10}, // 'H' ....
+ { 0b000101, 6}, // 'I' ..
+ {0b0001110111011101, 16}, // 'J' .---
+ { 0b000111010111, 12}, // 'K' -.-
+ { 0b000101011101, 12}, // 'L' .-..
+ { 0b0001110111, 10}, // 'M' --
+ { 0b00010111, 8}, // 'N' -.
+ { 0b00011101110111, 14}, // 'O' ---
+ { 0b00010111011101, 14}, // 'P' .--.
+ {0b0001110101110111, 16}, // 'Q' --.-
+ { 0b0001011101, 10}, // 'R' .-.
+ { 0b00010101, 8}, // 'S' ...
+ { 0b000111, 6}, // 'T' -
+ { 0b0001110101, 10}, // 'U' ..-
+ { 0b000111010101, 12}, // 'V' ...-
+ { 0b000111011101, 12}, // 'W' .--
+ { 0b00011101010111, 14}, // 'X' -..-
+ {0b0001110111010111, 16}, // 'Y' -.--
+ { 0b00010101110111, 14}, // 'Z' --..
+};
+
+
+const char *morse_msg;
+static const char * volatile morse_ptr;
+static char morse_repeat;
+
+void morse(const char *msg, char repeat)
+{
+ morse_msg = morse_ptr = msg;
+ morse_repeat = repeat;
+ SET_ERROR_STATE(0);
+}
+static void morse_update(void)
+{
+ static uint16_t code;
+ static uint8_t bits;
+
+ if(!morse_ptr) return;
+
+ if(!bits) {
+ char c = *morse_ptr++;
+ if(!c) {
+ if(morse_repeat) {
+ morse_ptr = morse_msg;
+ c = *morse_ptr++;
+ } else {
+ morse_ptr = 0;
+ return;
+ }
+ }
+ if((c >= 'A') && (c <= 'Z')) {
+ c -= 'A';
+ code = morse_letter[c].code;
+ bits = morse_letter[c].bits;
+ } else {
+ code = 0; bits = 4;
+ }
+ }
+ SET_ERROR_STATE(code & 1);
+ code >>= 1; bits--;
+}
+
+const char *platform_target_voltage(void)
+{
+ return "ABSENT!";
+
+}
+
+void assert_boot_pin(void)
+{
+ gpio_set_mode(GPIOA, GPIO_MODE_OUTPUT_2_MHZ,
+ GPIO_CNF_OUTPUT_PUSHPULL, GPIO0);
+ gpio_set(GPIOA, GPIO0);
+}
diff --git a/src/platforms/stm32_can/platform.h b/src/platforms/stm32_can/platform.h
new file mode 100644
index 0000000..cf08b54
--- /dev/null
+++ b/src/platforms/stm32_can/platform.h
@@ -0,0 +1,180 @@
+/*
+ * 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 STM32
+ * implementation.
+ */
+#ifndef __PLATFORM_H
+#define __PLATFORM_H
+
+#include <libopencm3/stm32/f1/gpio.h>
+#include <libopencm3/usb/usbd.h>
+
+#include <setjmp.h>
+#include <alloca.h>
+
+#include "gdb_packet.h"
+
+#define INLINE_GPIO
+#define CDCACM_PACKET_SIZE 64
+/*#define PLATFORM_HAS_TRACESWO*/
+
+extern usbd_device *usbdev;
+#define CDCACM_GDB_ENDPOINT 1
+#define CDCACM_UART_ENDPOINT 3
+
+/* Important pin mappings for STM32 implementation:
+ *
+ * LED0 = PB2 (Yellow LED : Running)
+ * LED1 = PB10 (Yellow LED : Idle)
+ * LED2 = PB11 (Red LED : Error)
+ *
+ * TPWR = RB0 (input) -- analogue on mini design ADC1, ch8
+ * nTRST = PC9
+ * SRST_OUT = NA
+ * TDI = PC12
+ * TMS = PB14(input for SWDP)
+ * TCK = PC10
+ * TDO = PC11(input)
+ * nSRST = PA7 (input)
+ *
+ * Force DFU mode button: PA0 Read High for Bootloader Req
+ */
+
+/* Hardware definitions... */
+#define TDI_PORT GPIOC
+#define TMS_PORT GPIOB
+#define TCK_PORT GPIOC
+#define TDO_PORT GPIOC
+#define TDI_PIN GPIO12
+#define TMS_PIN GPIO14
+#define TCK_PIN GPIO10
+#define TDO_PIN GPIO11
+
+#define SWDIO_PORT TMS_PORT
+#define SWCLK_PORT TCK_PORT
+#define SWDIO_PIN TMS_PIN
+#define SWCLK_PIN TCK_PIN
+
+//#define TRST_PORT GPIOC
+//#define TRST_PIN GPIO9
+
+#define LED_PORT GPIOB
+#define LED_PORT_UART GPIOB
+#define LED_UART GPIO0
+
+#define LED_IDLE_RUN GPIO1
+#define LED_ERROR GPIO12
+
+#define USB_DRIVER stm32f107_usb_driver
+#define USB_IRQ NVIC_OTG_FS_IRQ
+#define USB_ISR otg_fs_isr
+/* Interrupt priorities. Low numbers are high priority.
+ * For now USART1 preempts USB which may spin while buffer is drained.
+ * TIM3 is used for traceswo capture and must be highest priority.
+ */
+#define IRQ_PRI_USB (2 << 4)
+#define IRQ_PRI_USBUSART (1 << 4)
+#define IRQ_PRI_TIM3 (0 << 4)
+
+#define USBUSART USART2
+#define USBUSART_CR1 USART2_CR1
+#define USBUSART_IRQ NVIC_USART2_IRQ
+#define USBUSART_APB_ENR RCC_APB1ENR
+#define USBUSART_CLK_ENABLE RCC_APB1ENR_USART2EN
+#define USBUSART_PORT GPIOA
+#define USBUSART_TX_PIN GPIO2
+#define USBUSART_ISR usart2_isr
+
+#define DEBUG(...)
+
+extern uint8_t running_status;
+extern volatile uint32_t timeout_counter;
+
+extern jmp_buf fatal_error_jmpbuf;
+
+extern const char *morse_msg;
+
+#define gpio_set_val(port, pin, val) do { \
+ if(val) \
+ gpio_set((port), (pin)); \
+ else \
+ gpio_clear((port), (pin)); \
+} while(0)
+
+#define SET_RUN_STATE(state) {running_status = (state);}
+#define SET_IDLE_STATE(state) {gpio_set_val(LED_PORT, LED_IDLE_RUN, state);}
+#define SET_ERROR_STATE(state) {gpio_set_val(LED_PORT, LED_ERROR, state);}
+
+#define PLATFORM_SET_FATAL_ERROR_RECOVERY() {setjmp(fatal_error_jmpbuf);}
+#define PLATFORM_FATAL_ERROR(error) { \
+ if(running_status) gdb_putpacketz("X1D"); \
+ else gdb_putpacketz("EFF"); \
+ running_status = 0; \
+ target_list_free(); \
+ morse("TARGET LOST.", 1); \
+ longjmp(fatal_error_jmpbuf, (error)); \
+}
+
+int platform_init(void);
+void morse(const char *msg, char repeat);
+const char *platform_target_voltage(void);
+int platform_hwversion(void);
+void platform_delay(uint32_t delay);
+
+/* <cdcacm.c> */
+void cdcacm_init(void);
+/* Returns current usb configuration, or 0 if not configured. */
+int cdcacm_get_config(void);
+int cdcacm_get_dtr(void);
+
+/* <platform.h> */
+void uart_usb_buf_drain(uint8_t ep);
+
+/* Use newlib provided integer only stdio functions */
+#define sscanf siscanf
+#define sprintf siprintf
+#define vasprintf vasiprintf
+
+#ifdef INLINE_GPIO
+static inline void _gpio_set(u32 gpioport, u16 gpios)
+{
+ GPIO_BSRR(gpioport) = gpios;
+}
+#define gpio_set _gpio_set
+
+static inline void _gpio_clear(u32 gpioport, u16 gpios)
+{
+ GPIO_BRR(gpioport) = gpios;
+}
+#define gpio_clear _gpio_clear
+
+static inline u16 _gpio_get(u32 gpioport, u16 gpios)
+{
+ return (u16)GPIO_IDR(gpioport) & gpios;
+}
+#define gpio_get _gpio_get
+#endif
+
+#endif
+
+#define disconnect_usb() usbd_disconnect(usbdev,1)
+void assert_boot_pin(void);
+#define setup_vbus_irq()