66565a69a7
avr: hc: mips: codestyle fixes
* avr: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
* hc: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
* mips: codestyle fixes
After the board restructuration is time for codestyle cleanup
Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
Approved-by: Gregory Nutt <gnutt@nuttx.org>
440 lines
17 KiB
Plaintext
440 lines
17 KiB
Plaintext
boards/mips/pic32mz/flipnclick-pic32mz README
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===============================
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This README file discusses the port of NuttX to the Mikroe Flip&Click
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PIC32MZ board. That board features the PIC32MZ2048EFH100 MCU.
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Thanks to John Legg for contributing the Flip&Click PIC32MZ board!
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Contents
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========
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Port Status
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On Board Debug Support
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Using the mikroProg
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Creating Compatible NuttX HEX files
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Tool Issues
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Serial Console
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SPI
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LEDs
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SSD1306 OLED
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Configurations
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Port Status
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===========
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2018-01-07: Added architecture support for the PIC32MZ2048EFH100 used on
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the Flip&Click PIC32MZ board.
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2018-01-08: Created the basic board configuration for the Mikroe
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Flip&Click PIC32MZ board. No testing has yet been performed. At this
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point, I have not even figured out how I am going to load and debug
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new firmware.
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2018-02-08: I received a mikroProg PIC32 debugger (Thanks go to John Legg
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of the Debug Shop!).
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2018-02-09: The NSH configuration is now functional, but only with the
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RS-232 Click in mikroBUS slot B. There is, apparently, some mis-
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information about how UART4 RX is connected in mikroBUS slot A; I
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cannot receive serial there. But life is good in slot B.
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2018-02-10: Added the nxlines configuration to test the custom HiletGo
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OLED on a Click proto board. Debug output indicates that the example is
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running error free yet nothing appears on the OLED in mikroBUS slot A.
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I tried slot D with same result. I also ported the configuration to
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the Flip&Click SAM3X and got the same result. There could be SPI issues
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on the PIC32MX, but more likely that there is an error in my custom
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HiletGo Click. Damn!
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On Board Debug Support
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======================
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There are several debug options:
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1. Using the Arduino IDE (chipKIT core). This is available on the USB-UART
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port between the C and D MikroBUS sockets. Usage is described in the
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Flip&Click User Manual.
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I don't think trying to use the Arduino IDE is a good option.
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2. Using the mikroC USB HID bootloader. This is is available on the USB
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port between the A and B MikroBUS sockets. Usage is described in the
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Flip&Click User Manual.
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There is a simple application available at Mikroe that will allow you
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to write .hex files via the USB HID bootloader. However, in order to
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use the bootloader, you will have to control the memory map so that the
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downloaded code does not clobber the bootloader code FLASH, data
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memory, exception vectors, etc.
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At this point, I have found no documentation describing how to build
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the code outside of the Mikroe toolchain for use with the Mikroe
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bootloader.
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3. There is an undocumented and unpopulated PICKit3 connector between the
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B and C mikroBUS sockets.
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4. There is an undocumented and unpopulated mikroProg connector between
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the A and D mikroBUS sockets.
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Since 3) and 4) are undocumented, this would require some research and
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would, most likely, clobber the USB HID bootloader (and possibly the
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Arduino support as well).
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Using the mikroProg
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===================
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WARNINGS:
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1. Following there steps will most certainly overwrite the bootloader
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that was factory installed in FLASH!
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2. Due to the position and orientation of the mikroProg connector you
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may lose functionality: If you attach mikroProg to the red side of
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the board, you will not be able to use the Arduino Shield Connector
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while the mikroProg connected. If you attach mikroProg to the white
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side of the board, you will similarly lose access to mikroBUS
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connectors A and D.
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Hindsight is 20/20 and in retrospect I would look for a right handler
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header to priven the mikroProg connector from interfering with the
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Arduino connection.
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Hardware setup
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--------------
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You will need to add a five pin header to the mikroProg connector between
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the A and D mikroBUS sockets.
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Connect the mikroProg to the outer 5 pins of the mikroProg's 10-pin
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connector to the 5-pin header, respecting the pin 1 position: The
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colored wire on the ribbon cable should be on the same side as the tiny
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arrow on the board indicating pin 1.
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Connect the mikroProg to your computer with the provided USB cable; also
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power the Flip'n'Clip board with another USB cable connected to the
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computer. Either USB port will provide power.
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Installing the Software
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-----------------------
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From the mikroProg website https://www.mikroe.com/mikroprog-pic-dspic-pic32
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Download:
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Drivers for mikroProg Suite
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https://download.mikroe.com/setups/drivers/mikroprog/pic-dspic-pic32/mikroprog-pic-dspic-pic32-drivers.zip
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mikroProg Suite for PIC, dsPIC, PIC32 v260
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https://download.mikroe.com/setups/programming-software/mikroprog/pic-dspic-pic32/mikroprog-suite-pic-dspic-pic32-programming-software-setup-v260.zip
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Install the mikroProg Suite. From things I have read, I gather that you
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must be Administrator when installing the tool The instructions say that
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it will automatically install the drivers. It did not for me.
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To install the drivers... You will find several directories under
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mikroprog-pic-dspic-pic32-drivers/. Select the correct directory and run
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the .EXE file you find there.
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When I started the mikroProg suite, it could not find the USB driver.
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After a few frustrating hours of struggling with the drivers, I found
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that if I start the mikroProg suite as a normal user, it does not find
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the driver. But if I instead start the mikroProg suite as Administrator...
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There it is! A little awkward but works just fine.
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Creating Compatible NuttX HEX files
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===================================
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Intel Hex Format Files:
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-----------------------
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When NuttX is built it will produce two files in the top-level NuttX
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directory:
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1) nuttx - This is an ELF file, and
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2) nuttx.hex - This is an Intel Hex format file. This is controlled by
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the setting CONFIG_INTELHEX_BINARY in the .config file.
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The PICkit tool wants an Intel Hex format file to burn into FLASH. However,
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there is a problem with the generated nutt.hex: The tool expects the nuttx.hex
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file to contain physical addresses. But the nuttx.hex file generated from the
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top-level make will have address in the KSEG0 and KSEG1 regions.
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tools/pic32mx/mkpichex:
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----------------------
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There is a simple tool in the NuttX tools/pic32mx directory that can be
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used to solve both issues with the nuttx.hex file. But, first, you must
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build the tool:
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cd tools/pic32mx
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make
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Now you will have an executable
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file call mkpichex (or mkpichex.exe on
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Cygwin). This program will take the nutt.hex file as an input, it will
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convert all of the KSEG0 and KSEG1 addresses to physical address, and
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it will write the modified file, replacing the original nuttx.hex.
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To use this file, you need to do the following things:
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export PATH=??? # Add the NuttX tools/pic32mx directory to your
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# PATH variable
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make # Build nuttx and nuttx.hex
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mkpichex $PWD # Convert addresses in nuttx.hex. $PWD is the path
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# to the top-level build directory. It is the only
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# required input to mkpichex.
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Tool Issues
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===========
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Segger J-Link
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-------------
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If using a Jlink that only these versions work with PIC32:
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J-Link BASE / EDU V9 or later
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J-Link ULTRA+ / PRO V4 or later
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This is the command to use:
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JLinkGDBServer -device PIC32MZ2048EFH100 -if 2-wire-JTAG-PIC32 -speed 12000
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Serial Console
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==============
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[REVISIT: I am not sure if the USB VCOM ports are available to the
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software. That is likely another serial port option].
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Convenient U[S]ARTs that may be used as the Serial console include:
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1) An Arduino Serial Shield. The RX and TX pins are available on the
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Arduino connector D0 and D1 pins, respectively. These are connected
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to UART5, UART5_RX and UART5_TX which are RD14 and RD15, respectively.
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2) Mikroe Click Serial Shield. There are four Click bus connectors with
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serial ports available as follows:
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Click A: UART4 UART4_RX and UART4_TX which are RG9 and RE3, respectively.
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Click B: UART3 UART3_RX and UART3_TX which are RF0 and RF1, respectively.
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Click C: UART1 UART1_RX and UART1_TX which are RC1 and RE5, respectively.
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Click D: UART2 UART2_RX and UART2_TX which are RC3 and RC2, respectively.
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Other serial ports are probably available on the Arduino connector. I
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will leave that as an exercise for the interested reader.
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The outputs from these pins is 3.3V. You will need to connect RS232
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transceiver to get the signals to RS-232 levels. The simplest options are
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an expensive Arduino RS-232 shield or a Mikroe RS-232 Click board.
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STATUS: I have been unable to get the RS-232 Click to work in the mikroBUS
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A slot. The PIC32MZ did not receive serial input. It appears that there
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is an error in the some documentation: Either RG9 is not connected to
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UART4_RX or the PPS bit definitions are documented incorrectly for UART4.
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Switching to UART3 eliminates the problem and the serial console is fully
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functional. I have not tried the other options of UART1, 2, or 5.
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SPI
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===
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SPI3 is available on pins D10-D13 of the Arduino Shield connectors where
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you would expect then. The SPI connector is configured as follows:
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Pin J1 Board Signal PIC32MZ
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--- -- ------------ -------
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D10 8 SPI3_SCK RB14
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D11 7 SPI3_MISO RB9
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D12 6 SPI3_MOSI RB10
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D13 5 SPI3_SS RB9
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SPI1 and SPI2 are also available on the mikroBUS Click connectors (in
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addition to 5V and GND). The connectivity between connectors A and B and
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between C and D differs only in the chip select pin:
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MikroBUS A: MikroBUS B:
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Pin Board Signal PIC32MZ Pin Board Signal PIC32MZ
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---- ------------ ------- ---- ------------ -------
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CS SPI2_SS1 RA0 CS SPI2_SS0 RE4
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SCK SPI2_SCK RG6 SCK SPI2_SCK RG6
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MISO SPI2_MISO RC4 MISO SPI2_MISO RC4
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MOSI SPI2_MOSI RB5 MOSI SPI2_MOSI RB5
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MikroBUS C: MikroBUS D:
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Pin Board Signal PIC32MZ Pin Board Signal PIC32MZ
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---- ------------ ------- ---- ------------ -------
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CS SPI1_SS0 RD12 CS SPI1_SS1 RD13
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SCK SPI1_SCK RD1 SCK SPI1_SCK RD1
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MISO SPI1_MISO RD2 MISO SPI1_MISO RD2
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MOSI SPI1_MOSI RD3 MOSI SPI1_MOSI RD3
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LEDs and Buttons
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================
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LEDs
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----
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There are four LEDs on the top, red side of the board. Only
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one can be controlled by software:
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LED L - RB14 (SPI3_SCK)
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There are also four LEDs on the back, white side of the board:
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LED A - RA6
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LED B - RA7
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LED C - RE0
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LED D - RE1
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A high output value illuminates the LEDs.
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These LEDs are available to the application and are all available to the
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application unless CONFIG_ARCH_LEDS is defined. In that case, the usage
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by the board port is defined in include/board.h and src/sam_autoleds.c.
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The LEDs are used to encode OS-related events as follows:
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SYMBOL MEANING LED STATE
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L A B C D
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---------------- ----------------------- --- --- --- --- ---
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LED_STARTED NuttX has been started OFF ON OFF OFF OFF
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LED_HEAPALLOCATE Heap has been allocated OFF OFF ON OFF OFF
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LED_IRQSENABLED Interrupts enabled OFF OFF OFF ON OFF
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LED_STACKCREATED Idle stack created OFF OFF OFF OFF ON
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LED_INIRQ In an interrupt GLO N/C N/C N/C N/C
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LED_SIGNAL In a signal handler GLO N/C N/C N/C N/C
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LED_ASSERTION An assertion failed GLO N/C N/C N/C N/C
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LED_PANIC The system has crashed 2Hz N/C N/C N/C N/C
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LED_IDLE MCU is is sleep mode ---- Not used -----
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Thus if LED L is glowing faintly and all other LEDs are off (except LED D
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which was left on but is no longer controlled by NuttX and so may be in any
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state), NuttX has successfully booted and is, apparently, running normally
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and taking interrupts. If any of LEDs A-D are statically set, then NuttX
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failed to boot and the LED indicates the initialization phase where the
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failure occurred. If LED L is flashing at approximately 2Hz, then a fatal
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error has been detected and the system has halted.
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NOTE: After booting, LEDs A-D are no longer used by the system and may
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be controlled the application.
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Buttons
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-------
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The Flip&Click PIC32MZ has 2 user push buttons labeled T1 and T2 on the
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white side of the board:
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PIN LED Notes
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----- ---- -------------------------
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RD10 T1 Sensed low when closed
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RD11 T2 Sensed low when closed
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The switches have external pull-up resistors. The switches are pulled high
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(+3.3V) and grounded when pressed.
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SSD1306 OLED
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============
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Hardware
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--------
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The HiletGo is a 128x64 OLED that can be driven either via SPI or I2C (SPI
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is the default and is what is used here). I have mounted the OLED on a
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proto click board. The OLED is connected as follows:
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OLED ALIAS DESCRIPTION PROTO CLICK
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----- ----------- ------------- -----------------
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GND Ground GND
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VCC Power Supply 5V (3-5V)
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D0 SCL,CLK,SCK Clock SCK
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D1 SDA,MOSI Data MOSI,SDI
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RES RST,RESET Reset RST (GPIO OUTPUT)
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DC AO Data/Command INT (GPIO OUTPUT)
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CS Chip Select CS (GPIO OUTPUT)
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NOTE that this is a write-only display (MOSI only)!
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Configurations
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==============
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Information Common to All Configurations
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----------------------------------------
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1. Each PIC32MZ configuration is maintained in a sub-directory and can be
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selected as follow:
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tools/configure.sh flipnclick-pic32mz:<subdir>
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Where typical options are -l to configure to build on Linux or -c to
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configure for Cygwin under Linux. 'tools/configure.sh -h' will show
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you all of the options.
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Before building, make sure the PATH environment variable includes the
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correct path to the directory than holds your toolchain binaries.
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And then build NuttX by simply typing the following. At the conclusion
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of the make, the nuttx binary will reside in an ELF file called, simply,
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nuttx.
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make
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The <subdir> that is provided above as an argument to the
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tools/configure.sh must be is one of the directories listed in the
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following paragraph.
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2. These configurations uses the mconf-based configuration tool. To
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change this configurations using that tool, you should:
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a. Build and install the kconfig-mconf tool. See nuttx/README.txt
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see additional README.txt files in the NuttX tools repository.
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b. Execute 'make menuconfig' in the top-level nuttx in order to start
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the reconfiguration process.
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Configuration Directories
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-------------------------
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Where <subdir> is one of the following:
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nsh:
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This is the NuttShell (NSH) using the NSH startup logic at
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apps/examples/nsh.
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NOTES:
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1. Serial Console. UART3 is configured as the Serial Console. This
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assumes that you will be using a Mikroe RS-232 Click card in the
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mikroBUS B slot. Other serial consoles may be selected by re-
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configuring (see the section "Serial Consoles" above).
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2. Toolchain
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By default, the Pinguino MIPs tool chain is used. This toolchain
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selection can easily be changed with 'make menuconfig'.
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3. Default configuration: These are other things that you may want to
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change in the configuration:
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CONFIG_PIC32MZ_DEBUGGER_ENABLE=n : Debugger is disabled
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CONFIG_PIC32MZ_TRACE_ENABLE=n : Trace is disabled
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CONFIG_PIC32MZ_JTAG_ENABLE=n : JTAG is disabled
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nxlines
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This is an NSH configuration that supports the NX graphics example at
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apps/examples/nxlines as a built-in application.
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NOTES:
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1. This configuration derives from the nsh configuration. All of the
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notes there apply here as well.
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2. The default configuration assumes there is the custom HiletGo OLED
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in the mikroBUS A slot (and a Mikroe RS-232 Click card in the
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mikroBUS B slot). That is easily changed by reconfiguring, however.
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See the section entitled "HiletGo OLED" for information about this
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custom click card.
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STATUS:
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2018-02-10: The debug output indicates that the nxlines example is
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running with no errors, however, nothing appears on the OLED display.
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I tried slot D with same result. I also ported the configuration to
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the Flip&Click SAM3X and got the same result. There could be SPI issues
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on the PIC32MX, but more likely that there is an error in my custom
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HiletGo Click. Damn!
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