Added bootloader backdoor configuration for cc2538DK in contiki-conf.h and selector in startup-gcc.c. Updated Makefile.cc2538dk to support direct uploading. Also updated the platform readme to include the workflow with cc2538-bsl.

platform/cc2538dk/Makefile.cc2538dk

@@ -28,3 +28,12 @@ include $(CONTIKI_CPU)/Makefile.cc2538
 
 MODULES += core/net core/net/ipv6 core/net/mac core/net/ip \
            core/net/rpl core/net/rime core/net/mac/contikimac
+
+BSL = $(CONTIKI)/tools/cc2538-bsl/cc2538-bsl.py
+
+%.upload: %.bin
+ifeq ($(wildcard $(BSL)), )
+	@echo "ERROR: Could not find the cc2538-bsl script. Did you run 'git submodule update --init' ?"
+else
+	python $(BSL) -e -w -v $<
+endif

platform/cc2538dk/README.md

@@ -44,8 +44,8 @@ To start using Contiki, you will need the following:
 Different tasks can be performed under different operating systems. The table below summarises what task can be performed on which OS:
 
                        Windows     Linux     OS-X
-    Building Contiki      Y          Y         N
+    Building Contiki      Y          Y         Y
-    Node Programming      Y          Y         N
+    Node Programming      Y          Y         Y
     Console output
       (UART)              Y          Y         Y
       (USB CDC-ACM)       Y          Y         Y
@@ -56,7 +56,7 @@ Different tasks can be performed under different operating systems. The table be
       (UART)              N          Y         Y
       (USB CDC-ACM)       N          Y         Y
 
-The platform has been developed and tested under Windows XP, Mac OS X 10.7 and Ubuntu 12.04 and 12.10. The matrix above has been populated based on information for those OSs.
+The platform has been developed and tested under Windows XP, Mac OS X 10.9.1 and Ubuntu 12.04 and 12.10. The matrix above has been populated based on information for those OSs.
 
 Install a Toolchain
 -------------------
@@ -193,9 +193,18 @@ On Linux:
 
 Software to Program the Nodes
 -----------------------------
-On Windows, nodes can be programmed with TI's ArmProgConsole or the [SmartRF Flash Programmer][smart-rf-flashprog]. The README should be self-explanatory. With ArmProgConsole, upload the file with a `.bin` extension.
+The CC2538 can be programmed via the jtag interface or via the serial boot loader on the chip.
 
-On Linux, nodes can be programmed with TI's [UniFlash] tool. With UniFlash, use the file with `.elf` extension.
+* On Windows:
+    * Nodes can be programmed with TI's ArmProgConsole or the [SmartRF Flash Programmer 2][smart-rf-flashprog]. The README should be self-explanatory. With ArmProgConsole, upload the file with a `.bin` extension. (jtag + serial)
+    * Nodes can also be programmed via the serial boot loader in the cc2538. In `tools/cc2538-bsl/` you can find `cc2538-bsl.py` this is a python script that can download firmware to your node via a serial connection. If you use this option you just need to make sure you have a working version of python installed. You can read the README in the same directory for more info. (serial)
+
+* On Linux:
+    * Nodes can be programmed with TI's [UniFlash] tool. With UniFlash, use the file with `.elf` extension. (jtag + serial)
+    * Nodes can also be programmed via the serial boot loader in the cc2538. No extra software needs to be installed. (serial)
+
+* On OSX:
+    * The `cc2538-bsl.py` script in `tools/cc2538-bsl/` is the only option. No extra software needs to be installed. (serial)
 
 The file with a `.cc2538dk` extension is a copy of the `.elf` file.
 
@@ -231,6 +240,8 @@ It is recommended to start with the `cc2538-demo` and `timer-test` examples unde
 
 Strictly speaking, to build them you need to run `make TARGET=cc2538dk`. However, the example directories contain a `Makefile.target` which is automatically included and specifies the correct `TARGET=` argument. Thus, for examples under the `cc2538dk` directory, you can simply run `make`.
 
+If you want to upload the compiled firmware to a node via the serial boot loader you need to manually enable the boot loader and then use `make cc2538-demo.upload`. On the SmartRF06 board you enable the boot loader by resetting the board (EM RESET button) while holding the `select` button. (The boot loader backdoor needs to be enabled on the chip for this to work, see README in the `tools/cc2538-bsl` directory for more info)
+
 For the `cc2538-demo`, the comments at the top of `cc2538-demo.c` describe in detail what the example does.
 
 Node IEEE/RIME/IPv6 Addresses

platform/cc2538dk/contiki-conf.h

@@ -40,6 +40,16 @@ typedef uint32_t rtimer_clock_t;
 #define RTIMER_CLOCK_LT(a,b)     ((int32_t)((a)-(b)) < 0)
 /** @} */
 /*---------------------------------------------------------------------------*/
+/**
+ * \name Serial Boot Loader Backdoor configuration
+ *
+ * @{
+ */
+#ifndef FLASH_CCA_CONF_BOOTLDR_BACKDOOR
+#define FLASH_CCA_CONF_BOOTLDR_BACKDOOR	1 /**<Enable the boot loader backdoor */
+#endif
+/** @} */
+/*---------------------------------------------------------------------------*/
 /**
  * \name USB 'core' configuration
  *

platform/cc2538dk/startup-gcc.c

@@ -63,6 +63,15 @@ void cc2538_rf_err_isr(void);
 void udma_isr(void);
 void udma_err_isr(void);
 
+/* Boot Loader Backdoor selection */
+#if FLASH_CCA_CONF_BOOTLDR_BACKDOOR
+/* Backdoor enabled, on PA_3 (Select button) */
+#define FLASH_CCA_BOOTLDR_CFG (FLASH_CCA_BOOTLDR_CFG_ENABLE \
+  | ((3 << FLASH_CCA_BOOTLDR_CFG_PORT_A_PIN_S) & FLASH_CCA_BOOTLDR_CFG_PORT_A_PIN_M))
+#else
+#define FLASH_CCA_BOOTLDR_CFG FLASH_CCA_BOOTLDR_CFG_DISABLE
+#endif
+
 /* Link in the USB ISR only if USB is enabled */
 #if USB_SERIAL_CONF_ENABLE
 void usb_isr(void);
@@ -95,7 +104,7 @@ extern uint8_t _text[0];
 /*---------------------------------------------------------------------------*/
 __attribute__ ((section(".flashcca"), used))
 const flash_cca_lock_page_t __cca = {
-  FLASH_CCA_BOOTLDR_CFG_DISABLE, /* Bootloader backdoor disabled */
+  FLASH_CCA_BOOTLDR_CFG,          /* Boot loader backdoor configuration */
   FLASH_CCA_IMAGE_VALID,         /* Image valid */
   &_text,                        /* Vector table located at the start of .text */
   /* Unlock all pages and debug */