Merge pull request #89 from Gregwar/bootloader-option

Adding BOOTLOADER option to support Robotis bootloader different ROM

Makefile

@@ -32,6 +32,12 @@ BOARD_INCLUDE_DIR := $(MAKEDIR)/board-includes
 BOARD ?= maple
 MEMORY_TARGET ?= flash
 
+# Chooses the bootloader, available: maple and robotis
+BOOTLOADER ?= maple
+
+# This is the serial port used by robotis bootloader
+ROBOTIS_PORT ?= /dev/ttyACM0
+
 # $(BOARD)- and $(MEMORY_TARGET)-specific configuration
 include $(MAKEDIR)/target-config.mk
 
@@ -56,7 +62,8 @@ TARGET_FLAGS    += -I$(LIBMAPLE_PATH)/include/libmaple                       \
 TARGET_FLAGS += -I$(LIBRARIES_PATH) # for internal lib. includes, e.g. <Wire/WireBase.h>
 GLOBAL_CFLAGS   := -Os -g3 -gdwarf-2 -nostdlib \
                    -ffunction-sections -fdata-sections \
-		   -Wl,--gc-sections $(TARGET_FLAGS)
+		   -Wl,--gc-sections $(TARGET_FLAGS) \
+		   -DBOOTLOADER_$(BOOTLOADER)
 GLOBAL_CXXFLAGS := -fno-rtti -fno-exceptions -Wall $(TARGET_FLAGS)
 GLOBAL_ASFLAGS  := -x assembler-with-cpp $(TARGET_FLAGS)
 LDFLAGS  = $(TARGET_LDFLAGS) $(TOOLCHAIN_LDFLAGS) -mcpu=cortex-m3 -mthumb \
@@ -101,12 +108,19 @@ include $(SRCROOT)/build-targets.mk
 # USB ID for DFU upload -- FIXME: do something smarter with this
 BOARD_USB_VENDOR_ID  := 1EAF
 BOARD_USB_PRODUCT_ID := 0003
+
+ifeq ($(BOOTLOADER),maple)
 UPLOAD_ram   := $(SUPPORT_PATH)/scripts/reset.py && \
                 sleep 1                  && \
                 $(DFU) -a0 -d $(BOARD_USB_VENDOR_ID):$(BOARD_USB_PRODUCT_ID) -D $(BUILD_PATH)/$(BOARD).bin -R
 UPLOAD_flash := $(SUPPORT_PATH)/scripts/reset.py && \
                 sleep 1                  && \
                 $(DFU) -a1 -d $(BOARD_USB_VENDOR_ID):$(BOARD_USB_PRODUCT_ID) -D $(BUILD_PATH)/$(BOARD).bin -R
+endif
+
+ifeq ($(BOOTLOADER),robotis)
+UPLOAD_flash := $(SUPPORT_PATH)/scripts/robotis-loader.py $(ROBOTIS_PORT) $(BUILD_PATH)/$(BOARD).bin
+endif
 
 # Conditionally upload to whatever the last build was
 install: INSTALL_TARGET = $(shell cat $(BUILD_PATH)/build-type 2>/dev/null)

support/ld/stm32/mem/sram_20k_flash_128k_robotis/mem-flash.inc

@@ -0,0 +1,5 @@
+MEMORY
+{
+  ram (rwx) : ORIGIN = 0x20000C00, LENGTH = 17K
+  rom (rx)  : ORIGIN = 0x08003000, LENGTH = 108K
+}

support/ld/stm32/mem/sram_20k_flash_128k_robotis/mem-jtag.inc

@@ -0,0 +1,5 @@
+MEMORY
+{
+  ram (rwx) : ORIGIN = 0x20000000, LENGTH = 20K
+  rom (rx)  : ORIGIN = 0x08000000, LENGTH = 128K
+}

support/ld/stm32/mem/sram_20k_flash_128k_robotis/mem-ram.inc

@@ -0,0 +1,5 @@
+MEMORY
+{
+  ram (rwx) : ORIGIN = 0x20000C00, LENGTH = 17K
+  rom (rx)  : ORIGIN = 0x08005000, LENGTH = 0K
+}

support/make/board-includes/cm900.mk

@@ -7,4 +7,9 @@ MCU_F1_LINE := performance
 # This crap is due to ld-script limitations. If you know of a better
 # way to go about this (like some magic ld switches to specify MEMORY
 # at the command line), please tell us!
+ifeq ($(BOOTLOADER),maple)
 LD_MEM_DIR := sram_20k_flash_128k
+endif
+ifeq ($(BOOTLOADER),robotis)
+LD_MEM_DIR := sram_20k_flash_128k_robotis
+endif

support/make/board-includes/opencm904.mk

@@ -7,4 +7,9 @@ MCU_F1_LINE := performance
 # This crap is due to ld-script limitations. If you know of a better
 # way to go about this (like some magic ld switches to specify MEMORY
 # at the command line), please tell us!
+ifeq ($(BOOTLOADER),maple)
 LD_MEM_DIR := sram_20k_flash_128k
+endif
+ifeq ($(BOOTLOADER),robotis)
+LD_MEM_DIR := sram_20k_flash_128k_robotis
+endif

support/scripts/robotis-loader.py

@@ -0,0 +1,94 @@
+#!/usr/bin/python
+
+# This script sends a program on a robotis board (OpenCM9.04 or CM900)
+# using the robotis bootloader (used in OpenCM IDE)
+# 
+# Usage:
+# python robotis-loader.py <serial port> <binary>
+#
+# Example:
+# python robotis-loader.py /dev/ttyACM0 firmware.bin
+#
+# https://github.com/Gregwar/robotis-loader
+
+import serial, sys, os, time
+
+print('~~ Robotis loader ~~')
+print('')
+
+# Reading command line
+if len(sys.argv) != 3:
+    exit('! Usage: robotis-loader.py <serial-port> <binary>')
+pgm, port, binary = sys.argv
+
+# Helper to prints a progress bar
+def progressBar(percent, precision=65):
+    threshold=precision*percent/100.0
+    sys.stdout.write('[ ')
+    for x in xrange(0, precision):
+        if x < threshold: sys.stdout.write('#')
+        else: sys.stdout.write(' ')
+    sys.stdout.write(' ] ')
+    sys.stdout.flush()
+
+# Opening the firmware file
+try:
+    stat = os.stat(binary)
+    size = stat.st_size
+    firmware = file(binary, 'rb')
+    print('* Opening %s, size=%d' % (binary, size))
+except:
+    exit('! Unable to open file %s' % binary)
+
+# Opening serial port
+try:
+    s = serial.Serial(port, baudrate=115200)
+except:
+    exit('! Unable to open serial port %s' % port)
+
+print('* Resetting the board')
+s.setRTS(True)
+s.setDTR(False)
+time.sleep(0.1)
+s.setRTS(False)
+s.write('CM9X')
+s.close()
+time.sleep(1.0);
+
+print('* Connecting...')
+s = serial.Serial(port, baudrate=115200)
+s.write('AT&LD')
+print('* Download signal transmitted, waiting...')
+
+# Entering bootloader sequence
+while True:
+    line = s.readline().strip()
+    if line.endswith('Ready..'):
+        print('* Board ready, sending data')
+        cs = 0
+        pos = 0
+        while True:
+            c = firmware.read(2048)
+            if len(c):
+                pos += len(c)
+                sys.stdout.write("\r")
+                progressBar(100*float(pos)/float(size))
+                s.write(c)
+                for k in range(0,len(c)):
+                    cs = (cs+ord(c[k]))%256
+            else:
+                break
+        print('')
+        s.setDTR(True)
+        print('* Checksum: %d' % (cs))
+        s.write(chr(cs))
+        print('* Firmware was sent')
+    else:
+        if line == 'Success..':
+            print('* Success, running the code')
+            print('')
+            s.write('AT&RST')
+            s.close()
+            exit()
+        else:
+            print('Board -> '+line)

wirish/boards.cpp

@@ -144,7 +144,11 @@ static void setup_clocks(void) {
  * present. If no bootloader is present, the user NVIC usually starts
  * at the Flash base address, 0x08000000.
  */
+#if defined(BOOTLOADER_maple)
 #define USER_ADDR_ROM 0x08005000
+#elif defined(BOOTLOADER_robotis)
+#define USER_ADDR_ROM 0x08003000
+#endif
 #define USER_ADDR_RAM 0x20000C00
 extern char __text_start__;
 

wirish/usb_serial.cpp

@@ -36,6 +36,7 @@
 #include <libmaple/nvic.h>
 #include <libmaple/usb_cdcacm.h>
 #include <libmaple/usb.h>
+#include <libmaple/iwdg.h>
 
 #include <wirish/wirish.h>
 
@@ -179,6 +180,7 @@ static void ifaceSetupHook(unsigned hook, void *requestvp) {
         return;
     }
 
+#if defined(BOOTLOADER_maple)
     // We need to see a negative edge on DTR before we start looking
     // for the in-band magic reset byte sequence.
     uint8 dtr = usb_cdcacm_get_dtr();
@@ -196,13 +198,25 @@ static void ifaceSetupHook(unsigned hook, void *requestvp) {
         reset_state = dtr ? DTR_HIGH : DTR_LOW;
         break;
     }
+#endif
+
+#if defined(BOOTLOADER_robotis)
+    uint8 dtr = usb_cdcacm_get_dtr();
+    uint8 rts = usb_cdcacm_get_rts();
+
+    if (rts && !dtr) {
+        reset_state = DTR_NEGEDGE;
+    }
+#endif
 }
 
 #define RESET_DELAY 100000
+#if defined(BOOTLOADER_maple)
 static void wait_reset(void) {
   delay_us(RESET_DELAY);
   nvic_sys_reset();
 }
+#endif
 
 #define STACK_TOP 0x20000800
 #define EXC_RETURN 0xFFFFFFF9
@@ -215,7 +229,12 @@ static void rxHook(unsigned hook, void *ignored) {
 
         if (usb_cdcacm_data_available() >= 4) {
             // The magic reset sequence is "1EAF".
+#if defined(BOOTLOADER_maple)
             static const uint8 magic[4] = {'1', 'E', 'A', 'F'};
+#endif
+#if defined(BOOTLOADER_robotis)
+            static const uint8 magic[4] = {'C', 'M', '9', 'X'};
+#endif
             uint8 chkBuf[4];
 
             // Peek at the waiting bytes, looking for reset sequence,
@@ -227,6 +246,7 @@ static void rxHook(unsigned hook, void *ignored) {
                 }
             }
 
+#if defined(BOOTLOADER_maple)
             // Got the magic sequence -> reset, presumably into the bootloader.
             // Return address is wait_reset, but we must set the thumb bit.
             uintptr_t target = (uintptr_t)wait_reset | 0x1;
@@ -251,6 +271,12 @@ static void rxHook(unsigned hook, void *ignored) {
                            [exc_return] "r" (EXC_RETURN),
                            [cpsr] "r" (DEFAULT_CPSR)
                          : "r0", "r1", "r2");
+#endif
+
+#if defined(BOOTLOADER_robotis)
+            iwdg_init(IWDG_PRE_4, 10);
+#endif
+
             /* Can't happen. */
             ASSERT_FAULT(0);
         }