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Diffstat (limited to 'nuttx/configs/arduino-due/README.txt')
-rw-r--r-- | nuttx/configs/arduino-due/README.txt | 207 |
1 files changed, 189 insertions, 18 deletions
diff --git a/nuttx/configs/arduino-due/README.txt b/nuttx/configs/arduino-due/README.txt index 1be147797..e58d5507d 100644 --- a/nuttx/configs/arduino-due/README.txt +++ b/nuttx/configs/arduino-due/README.txt @@ -17,6 +17,7 @@ Contents - NXFLAT Toolchain - Buttons and LEDs - Serial Consoles + - Loading Code - SAM4S Xplained-specific Configuration Options - Configurations @@ -348,28 +349,198 @@ Buttons and LEDs Serial Consoles ^^^^^^^^^^^^^^^ + The SAM3X has a UART and 4 USARTS. The Programming port uses a USB-to- + serial chip connected to the first UART0 of the MCU (RX0 and TX0). The + output from that port is visible using the Arduino tool. + Any of UART and USART0-3 may be used as a serial console. By default, the UART is used as the serial console in all configurations. But that is easily changed by modifying the configuration as described under "Configurations" below. - ------------------------------ - PIO SIGNAL CONN PIN - ----- ---------- ---- -------- - PA8 [U]RX PWML 1 - PA9 [U]TX PWML 2 - PD4 TXD0 COMM 1 - PD5 RXD0 COMM 2 - PA12 RXD1 COMM 4 - PA13 TXD1 COMM 3 - PA10 RXD2 COMM 6 - PA11 TXD2 COMM 5 - PB20 AD11(TXD3) ADCH 4 - PB21 AD14(RXD3) XIO 33 + Here are the UART signals available on pins. Under signal name, the first + column is the name on the schematic associated with the GPIO, the second + comes from: http://arduino.cc/en/Hacking/PinMappingSAM3X, and the third + is the name of the multiplexed SAM3X UART function from the data sheet. + This is more than a little confusing. + + ------------------------------------------------------------------ + PIO SIGNAL NAME CONNECTOR PIN + DUE SCHEM. PIN MAPPING SAM3X DUE SCHEM. BOARD LABEL + ----- ---------- -------------- ----------- ---------- ----------- + PA8 [U]RX RX0 UART0 URXD PWML 1 RX0<-0 + PA9 [U]TX TX0 UART0 UTXD PWML 2 TX0->1 + PD5 RXD0 RX3 USART3 RXD3 COMM 2 RX3 + PD4 TXD0 TX3 USART3 TXD3 COMM 1 TX3 + PA12 RXD1 RX2 USART1 RXD1 COMM 4 TX2 + PA13 TXD1 TX2 USART1 TXD1 COMM 3 RX2 + PA10 RXD2 RX1 USART0 RXD0 COMM 6 RX1 + PA11 TXD2 TX1 USART0 TXD0 COMM 5 TX1 + PB21 AD14(RXD3) Digital Pin 52 USART2 RXD2 XIO 33 33 + PB20 AD11(TXD3) Analog In 11 USART2 TXD2 ADCH 4 A11 The outputs from these pins is 3.3V. You will need to connect RS232 - transceiver to get the signals to RS232 levels (or connect the pins to the - USB virual COM port. + transceiver to get the signals to RS232 levels (or connect to the + USB virual COM port in the case of UART0). + +Loading Code +^^^^^^^^^^^^ + + Installing the Arduino USB Driver under Windows: + ------------------------------------------------ + 1. Download the Windows version of the Arduino software, not the 1.0.x + release but the latest 1.5.x that supports the Due. When the download + finishes, unzip the downloaded file. + 2. Connect the Due to your computer with a USB cable via the Programming port. + 3. The Windows driver installation should fail. + 4. Open the Device Manger + 5. Look for the listing named "Ports (COM & LPT)". You should see an open + port named "Arduino Due Prog. Port". + 6 Select the "Browse my computer for Driver software" option. + 7. Right click on the "Arduino Due Prog. Port" and choose "Update Driver + Software". + 8. Navigate to the folder with the Arduino IDE you downloaded and unzipped + earlier. Locate and select the "Drivers" folder in the main Arduino folder + (not the "FTDI USB Drivers" sub-directory). + + Uploading NuttX to the Due Using Bossa: + --------------------------------------- + I don't think this can be done because the Arduino software is so dedicated + to "sketches". However, Arduino uses BOSSA under the hood to load code and + you can use BOSSA outside of Arduino. + + Uploading NuttX to the Due Using Bossa: + --------------------------------------- + Generic BOSSA installation files are avaialable here: + http://sourceforge.net/projects/b-o-s-s-a/?source=dlp + + However, DUE uses a patched version of BOSSA available as source code here: + https://github.com/shumatech/BOSSA/tree/arduino + + But, fortunately, since you already installed Arduino, you already have + BOSSA installed here. In my installation, it is here: + + C:\Program Files (x86)\Arduino\arduino-1.5.2\hardware\tools\bossac.exe + + Where is some sample output from a Windows CMD.exe shell. NOTE that my + Arduino programming port shows up as COM26. It may be different on your + system. + + To enter boot mode, set the baud to 1200 and send anything to the + programming port: + + C:\Program Files (x86)\Arduino\arduino-1.5.2\hardware\tools>mode com26:1200,n,8,1 + + Status for device COM26: + ------------------------ + Baud: 1200 + Parity: None + Data Bits: 8 + Stop Bits: 1 + Timeout: ON + XON/XOFF: OFF + CTS handshaking: OFF + DSR handshaking: OFF + DSR sensitivity: OFF + DTR circuit: ON + RTS circuit: ON + + C:\Program Files (x86)\Arduino\arduino-1.5.2\hardware\tools>bossac.exe --port=COM26 -U false -i + Device : ATSAM3X8 + Chip ID : 285e0a60 + Version : v1.1 Dec 15 2010 19:25:04 + Address : 524288 + Pages : 2048 + Page Size : 256 bytes + Total Size : 512KB + Planes : 2 + Lock Regions : 32 + Locked : none + Security : false + Boot Flash : false + + In a Cygwin BaSH shell: + + export PATH="/cygdrive/c/Program Files (x86)/Arduino/arduino-1.5.2/hardware/tools":$PATH + + Erasing, writing, and verifying FLASH with bossac: + + $ bossac.exe --port=COM26 -U false -e -w -v -b nuttx.bin -R + No device found on COM26 + + This error means that there is code running on the Due already so the + bootloader cannot connect. Pressing reset and trying again + + $ bossac.exe --port=COM26 -U false -e -w -v -b nuttx.bin -R + No device found on COM26 + + Sill No connection because Duo does not jump to bootloader after reset.\ + Press ERASE button and try again + + $ bossac.exe --port=COM26 -U false -e -w -v -b nuttx.bin -R + Erase flash + Write 86588 bytes to flash + [==============================] 100% (339/339 pages) + Verify 86588 bytes of flash + [==============================] 100% (339/339 pages) + Verify successful + Set boot flash true + CPU reset. + + Other useful bossac things operations. + + a) Write code to FLASH don't change boot mode and don't reset. This lets + you examine the FLASH contents that you just loaded while the bootloader + is still active. + + $ bossac.exe --port=COM26 -U false -e -w -v nuttx.bin + Write 64628 bytes to flash + [==============================] 100% (253/253 pages) + Verify 64628 bytes of flash + [==============================] 100% (253/253 pages) + Verify successful + Set boot flash true + + Verify the FLASH contents (the bootloader must be running) + + $ bossac.exe --port=COM26 -U false -v nuttx.bin + Verify 64628 bytes of flash + [==============================] 100% (253/253 pages) + Verify successful + + Read from FLASH to a file (the bootloader must be running): + + $ bossac.exe --port=COM26 -U false --read=4096 nuttx.dump + Read 4096 bytes from flash + [==============================] 100% (16/16 pages) + + Change to boot from FLASH + + $ bossac.exe --port=COM26 -U false --boot=1 + Set boot flash true + + Uploading NuttX to the Due Using JTAG: + ------------------------------------- + + The JTAG/SWD signals are brought out to a 10-pin header JTAG connector: + + PIN SIGNAL JTAG STANDARD NOTES + --- -------------- ----------------- -------------------------------- + 1 3.3V VTref + 2 JTAG_TMS SWDIO/TMS SAM3X pin 31, Pulled up on board + 3 GND GND + 4 JTAG_TCK SWDCLK/TCK SAM3X pin 28, Pulled up on board + 5 GND GND + 6 JTAG_TDO SWO/EXta/TRACECTL SAM3X pin 30, ulled up on board + 7 N/C Key + 8 JTAG_TDI NC/EXTb/TDI SAM3X pin 29, Pulled up on board + 9 GND GNDDetect + 10 MASTER-RESET nReset + + You should be able to use a 10- to 20-pin adaptr to connect a SAM-ICE + debugger to the Arduino Due. I have this Olimex adapter: + https://www.olimex.com/Products/ARM/JTAG/ARM-JTAG-20-10/ . But so far I + have been unable to get the get the SAM-ICE to communicate with the Due. Arduino DUE-specific Configuration Options ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ @@ -616,7 +787,7 @@ Configuration sub-directories 1. The configuration configuration can be modified to include support for the on-board SRAM (1MB). - System Type -> External Memory Configuration + System Type -> External Memory Configuration CONFIG_ARCH_EXTSRAM0=y : Select SRAM on CS0 CONFIG_ARCH_EXTSRAM0SIZE=1048576 : Size=1MB @@ -625,7 +796,7 @@ Configuration sub-directories a) To enable the NuttX RAM test that may be used to verify the external SRAM: - System Type -> External Memory Configuration + System Type -> External Memory Configuration CONFIG_ARCH_EXTSRAM0HEAP=n : Don't add to heap Application Configuration -> System NSH Add-Ons @@ -659,7 +830,7 @@ Configuration sub-directories b) To add this RAM to the NuttX heap, you would need to change the configuration as follows: - System Type -> External Memory Configuration + System Type -> External Memory Configuration CONFIG_ARCH_EXTSRAM0HEAP=y : Add external RAM to heap Memory Management |