configs/pic32mx7mmb README =============================== This README file discusses the port of NuttX to the Mikroelektronika PIC32MX7 Multimedia Board (MMB). See http://www.mikroe.com/ for further information. Contents ======== PIC32MX795F512L Pin Out Toolchains Creating Compatible NuttX HEX files Serial Console LEDs PIC32MX Configuration Options Configurations PIC32MX795F512L Pin Out ======================= LEFT SIDE, TOP-TO-BOTTOM (if pin 1 is in upper left) --- ---------------------------------- -------------------------- ----------------------------------------------- PIN CONFIGURATIONS SIGNAL NAME ON-BOARD CONNECTIONS (Family Data Sheet Table 1-1) (PIC32MX7 Schematic) --- ---------------------------------- -------------------------- ----------------------------------------------- 1 RG15/AERXERR AERXERR LAN8720A RXERR 2 VDD VCC3 --- 3 PMD5/RE5 PMPD5 TFT display, HDR1 pin 13 4 PMD6/RE6 PMPD6 TFT display, HDR1 pin 12 5 PMD7/RE7 PMPD7 TFT display, HDR1 pin 11 6 RC1/T2CK LCD_RST TFT display 7 RC2/AC2TX/T3CK EE_CS# M25P80 CS 8 RC3/AC2RX/T4CK ACL_CS# ADXL345 CS and VCC 9 RC4/SDI1/T5CK SDI1 SPI1 data IN 10 PMA5/CN8/ECOL/RG6/SCK2/U3RTS/U6TX RG6 ? 11 PMA4/CN9/ECRS/RG7/SDA4/SDI2/U3RX SD_CD# SD Connector 12 PMA3/AECRSDV/AERXDV/CN10/ECRSDV/ AECRSDV LAN8720A SRS_DIV ERXDV/RG8/SCL4/SDO2/U3TX 13 MCLR MCLR Debug connector 14 PMA2/AEREFCLK/AERXCLK/CN11/ AEREFCLK LAN8720A INT EREFCLK/ERXCLK/RG9/SS2/U3CTS/ U6RX 15 VSS (grounded) --- 16 VDD VCC3 --- 17 RA0/TMS LED-0 LED0 (pulled up), HDR2 pin 26 18 AERXD0/INT1/RE8 AERXD0 LAN8720A RXD0 19 AERXD1/INT2/RE9 AERXD1 LAN8720A RXD1 20 AN5/C1IN+/CN7/RB5/VBUSON RB5 HDR1 pin 28 21 AN4/C1IN-/CN6/RB4 CDC_CS# ? 22 AN3/C2IN+/CN5/RB3 JOY-D Joystick D, HDR1 pin 21 23 AN2/C2IN-/CN4/RB2 JOY-C Joystick C, HDR1 pin 22 24 AN1/CN3/PGEC1/RB1 JOY-B Joystick B, HDR1 pin 23 25 AN0/CN2/PGED1/RB0 JOY-A Joystick A, HDR1 pin 24 BOTTOM SIDE, LEFT-TO-RIGHT (if pin 1 is in upper left) --- ---------------------------------- -------------------------- ----------------------------------------------- PIN CONFIGURATIONS SIGNAL NAME ON-BOARD CONNECTIONS (Family Data Sheet Table 1-1) (PIC32MX7 Schematic) --- ---------------------------------- -------------------------- ----------------------------------------------- 26 AN6/OCFA/PGEC2/RB6 PGC2 Debugger interface 27 AN7/PGED2/RB7 PGD2 Debugger interface 28 PMA7/AERXD2/CVREF-/RA9 SD_CD# SD Connector 29 PMA6/AERXD3/CVREF+/RA10/VREF+ JOY-CP Joystick CP, HDR1 pin 25 30 AVDD VCC3 --- 31 AVSS (grounded) --- 32 AN8/C1OUT/RB8 TEMP MCP9700A VOUT 33 AN9/C2OUT/RB9 USB-PSW USB soft-connect pull-up, HDR2 pin 3 34 PMA13/AN10/RB10/CVREFOUT LCD-YD TFT display 35 PMA12/AETXERR/AN11/ERXERR/RB11 LCD-XR TFT display 36 VSS (grounded) --- 37 VDD P32_VDD --- 38 RA1/TCK LED-1 LED1 (pulled up), HDR2 pin 27 39 AC1TX/RF13/SCK4/U2RTS/U5TX SCK3A WM873ASEDS BCLK, HDR2 pin 21 40 AC1RX/RF12/SS4/U2CTS/U5RX LRC WM873ASEDS DACLRC 41 PMA11/AECRS/AN12/ERXD0/RB12 LCD-YU TFT display 42 PMA10/AECOL/AN13/ERXD1/RB13 LCD-XL TFT display 43 PMA1/AETXD3/AN14/ERXD2/PMALH/RB14 LCD-CS# TFT display, HDR2 pin 3 44 PMA0/AETXD2/AN15/CN12/ERXD3/OCFB/ PMPA0/AN15/OCFB/CN12 PMALL/RB15 45 VSS (grounded) --- 46 VDD P32_VDD --- 47 AETXD0/CN20/RD14/SS3/U1CTS/U4RX AETXD0 LAN8720A TXD0 48 AETXD1/CN21/RD15/SCK3/U1RTS/U4TX AETXD1 LAN8720A TXD1 49 PMA9/CN17/RF4/SDA5/SDI4/U2RX SDI3A WM873ASEDS ADCDAT, HDR2 pin 19 50 PMA8/CN18/RF5/SCL5/SDO4/U2TX SDO3A WM873ASEDS DACDAT, HDR2 pin 20 RIGHT SIDE, TOP-TO-BOTTOM (if pin 1 is in upper left) --- ---------------------------------- -------------------------- ----------------------------------------------- PIN CONFIGURATIONS SIGNAL NAME ON-BOARD CONNECTIONS (Family Data Sheet Table 1-1) (PIC32MX7 Schematic) --- ---------------------------------- -------------------------- ----------------------------------------------- 75 VSS (grounded) 74 CN0/RC14/SOSCO/T1CK SOSC0 32.768kHz Oscillator 73 CN1/RC13/SOSCI SOSC1 32.768kHz Oscillator 72 OC1/INT0/RD0/SDO1 SDO1M SPI1 data out 71 PMA14/AEMDC/EMDC/IC4/PMCS1/RD11 AEMDC LAN8720A MDC 70 PMA15/IC3/PMCS2/RD10/SCK1 SCK1M SPI1 clock 69 IC2/RD9/SS1 LED-2 LED2 (pulled up), HDR2 pin 28 68 AEMDIO/EMDIO/IC1/RD8/RTCC AEMDIO LAN8720A MDIO 67 AETXEN/INT4/RA15/SDA1 AETXN LAN8720A TXEN 66 AETXCLK/INT3/RA14/SCL1 RA14 HDR2 pin 14 65 VSS (grounded) --- 64 CLKO/OSC2/RC15 8MHz crystal 63 CLKI/OSC1/RC12 8MHz crystal 62 VDD VCC3 --- 61 RA5/TDO RA5 HDR2 pin 13 60 RA4/TDI RA4 HDR2 pin 12 59 RA3/SDA2 SDA2 I2C2 SDA, 24AA01 SDA 58 RA2/SCL2 SCL2 I2C2 SCL, 24AA01 SCL 57 D+/RG2 USBDP USB device 56 D-/RG3 USBDM USB device 55 VUSB VCC3 --- 54 VBUS USB_DET USB device 53 RF8/SCL3/SDO3/U1TX U1TX RS-232 52 RF2/SDA3/SDI3/U1RX U2RX RS-232 51 RF3/USBID USB-ID USB device TOP SIDE, LEFT-TO-RIGHT (if pin 1 is in upper left) --- ---------------------------------- -------------------------- ----------------------------------------------- PIN CONFIGURATIONS SIGNAL NAME ON-BOARD CONNECTIONS (Family Data Sheet Table 1-1) (PIC32MX7 Schematic) --- ---------------------------------- -------------------------- ----------------------------------------------- 100 PMD4/RE4 PMPD4 TFT display, HDR1 pin 14 99 PMD3/RE3 PMPD3 TFT display, HDR1 pin 15 98 PMD2/RE2 PMPD2 TFT display, HDR1 pin 16 97 RG13/TRD0 TRD0 HDR2 pin 7 96 RG12/TRD1 TRD1 HDR2 pin 8 95 RG14/TRD2 TRD2 HDR2 pin 9 94 PMD1/RE1 PMPD1 TFT display, HDR1 pin 17 93 PMD0/RE0 PMPD0 TFT display, HDR1 pin 18 92 RA7/TRD3 TRD3 HDR2 pin 10 91 RA6/TRCLK TRCLK HDR2 pin 6 90 PMD8/C2RX/RG0 PMPD8 TFT display, HDR1 pin 10 89 PMD9/C2TX/ETXERR/RG1 PMPD9 TFT display, HDR1 pin 9 88 PMD10/C1TX/ETXD0/RF1 PMPD10 TFT display, HDR1 pin 8 87 PMD11/C1RX/ETXD1/RF0 PMPD11 TFT display, HDR1 pin 7 86 VDD P32_VDD --- 85 VCAP/VCORE (capacitor to ground) --- 84 PMD15/CN16/ETXCLK/RD7 PMPD15 TFT display, HDR1 pin 3 83 PMD14/CN15/ETXEN/RD6 PMPD14 TFT display, HDR1 pin 4 82 CN14/PMRD/RD5 PMPRD 81 CN13/OC5/PMWR/RD4 PMPWR 80 PMD13/CN19/ETXD3/RD13 PMPD13 TFT display, HDR1 pin 5 79 PMD12/ETXD2/IC5/RD12 PMPD12 TFT display, HDR1 pin 6 78 OC4/RD3 RD3 HDR2 pin 5 77 OC3/RD2 LCD_BLED LCD backlight LED 76 OC2/RD1 RD1 HDR2 pin 11 Toolchains ========== I am using the free, LITE version of the PIC32MX toolchain available for download from the microchip.com web site. I am using the Windows version. The MicroChip toolchain is the only toolchaing currently supported in these configurations, but it should be a simple matter to adapt to other toolchains by modifying the Make.defs file include in each configuration. Toolchain Options: CONFIG_PIC32MX_MICROCHIPW - MicroChip full toolchain for Windows CONFIG_PIC32MX_MICROCHIPL - MicroChip full toolchain for Linux CONFIG_PIC32MX_MICROCHIPW_LITE - MicroChip LITE toolchain for Windows CONFIG_PIC32MX_MICROCHIPL_LITE - MicroChip LITE toolchain for Linux Windows Native Toolchains NOTE: There are several limitations to using a Windows based toolchain in a Cygwin environment. The three biggest are: 1. The Windows toolchain cannot follow Cygwin paths. Path conversions are performed automatically in the Cygwin makefiles using the 'cygpath' utility but you might easily find some new path problems. If so, check out 'cygpath -w' 2. Windows toolchains cannot follow Cygwin symbolic links. Many symbolic links are used in Nuttx (e.g., include/arch). The make system works around these problems for the Windows tools by copying directories instead of linking them. But this can also cause some confusion for you: For example, you may edit a file in a "linked" directory and find that your changes had no effect. That is because you are building the copy of the file in the "fake" symbolic directory. If you use a Windows toolchain, you should get in the habit of making like this: make clean_context all An alias in your .bashrc file might make that less painful. 3. Dependencies are not made when using Windows versions of the GCC. This is because the dependencies are generated using Windows pathes which do not work with the Cygwin make. Support has been added for making dependencies with the windows-native toolchains. That support can be enabled by modifying your Make.defs file as follows: - MKDEP = $(TOPDIR)/tools/mknulldeps.sh + MKDEP = $(TOPDIR)/tools/mkdeps.sh --winpaths "$(TOPDIR)" If you have problems with the dependency build (for example, if you are not building on C:), then you may need to modify tools/mkdeps.sh Powering the Board ================== [To be provided] Creating Compatible NuttX HEX files =================================== Intel Hex Format Files: ----------------------- When NuttX is built it will produce two files in the top-level NuttX directory: 1) nuttx - This is an ELF file, and 2) nuttx.hex - This is an Intel Hex format file. This is controlled by the setting CONFIG_INTELHEX_BINARY in the .config file. The PICkit tool wants an Intel Hex format file to burn into FLASH. However, there is a problem with the generated nutt.hex: The tool expects the nuttx.hex file to contain physical addresses. But the nuttx.hex file generated from the top-level make will have address in the KSEG0 and KSEG1 regions. tools/mkpichex: --------------- There is a simple tool in the configs/pic32mx7mmb/tools directory that can be used to solve both issues with the nuttx.hex file. But, first, you must build the the tools: cd configs/pic32mx7mmb/tools make Now you will have an excecutable file call mkpichex (or mkpichex.exe on Cygwin). This program will take the nutt.hex file as an input, it will convert all of the KSEG0 and KSEG1 addresses to physical address, and it will write the modified file, replacing the original nuttx.hex. To use this file, you need to do the following things: . ./setenv.sh # Source setenv.sh. Among other this, this script # will add configs/pic32mx7mmb/tools to your # PATH variable make # Build nuttx and nuttx.hex mkpichex $PWD # Convert addresses in nuttx.hex. $PWD is the path # to the top-level build directory. It is the only # required input to mkpichex. Serial Console ============== UART1 is connected to the on-board RS-232 connector LEDs ==== The Mikroelektronika PIC32MX7 MMB has 3 user LEDs labeled LED0-2 in the schematics: --- ----- --------------------------------------------------------- PIN Board Notes --- ----- --------------------------------------------------------- RA0 LED0 Pulled-up, low value illuminates RA1 LED1 Pulled-up, low value illuminates RD9 LED2 Pulled-up, low value illuminates RA9 LED4 Not available for general use*, indicates MMC/SD activity --- LED5 Not controllable by software, indicates power-on * RA9 is also the SD chip select. It will illuminate whenever the SD card is selected. If SD is not used, then LED4 could also be used as a user- controlled LED. If CONFIG_ARCH_LEDS is defined, then NuttX will control these LEDs as follows: ON OFF ------------------------- ---- ---- ---- ---- ---- ---- LED0 LED1 LED2 LED0 LED1 LED2 ------------------------- ---- ---- ---- ---- ---- ---- LED_STARTED 0 OFF OFF OFF --- --- --- LED_HEAPALLOCATE 1 ON OFF N/C --- --- --- LED_IRQSENABLED 2 OFF ON N/C --- --- --- LED_STACKCREATED 3 ON ON N/C --- --- --- LED_INIRQ 4 N/C N/C ON N/C N/C OFF LED_SIGNAL 4 N/C N/C ON N/C N/C OFF LED_ASSERTION 4 N/C N/C ON N/C N/C OFF LED_PANIC 5 ON N/C N/C OFF N/C N/C PIC32MX Configuration Options ============================= General Architecture Settings: CONFIG_ARCH - Identifies the arch/ subdirectory. This should be set to: CONFIG_ARCH=mips CONFIG_ARCH_family - For use in C code: CONFIG_ARCH_MIPS=y CONFIG_ARCH_architecture - For use in C code: CONFIG_ARCH_MIPS32=y CONFIG_ARCH_CHIP - Identifies the arch/*/chip subdirectory CONFIG_ARCH_CHIP=pic32mx CONFIG_ARCH_CHIP_name - For use in C code to identify the exact chip: CONFIG_ARCH_CHIP_PIC32MX795F512L=y CONFIG_ARCH_BOARD - Identifies the configs subdirectory and hence, the board that supports the particular chip or SoC. CONFIG_ARCH_BOARD=pic32mx7mmb CONFIG_ARCH_BOARD_name - For use in C code CONFIG_ARCH_BOARD_PIC32MX7MMB=y CONFIG_ARCH_LOOPSPERMSEC - Must be calibrated for correct operation of delay loops CONFIG_ENDIAN_BIG - define if big endian (default is little endian) CONFIG_DRAM_SIZE - Describes the installed DRAM (CPU SRAM in this case): CONFIG_DRAM_SIZE=(32*1024) (32Kb) There is an additional 32Kb of SRAM in AHB SRAM banks 0 and 1. CONFIG_DRAM_START - The start address of installed DRAM CONFIG_DRAM_START=0x10000000 CONFIG_DRAM_END - Last address+1 of installed RAM CONFIG_DRAM_END=(CONFIG_DRAM_START+CONFIG_DRAM_SIZE) CONFIG_ARCH_IRQPRIO - The PIC32MXx supports interrupt prioritization CONFIG_ARCH_IRQPRIO=y CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to boards that have LEDs CONFIG_ARCH_INTERRUPTSTACK - This architecture supports an interrupt stack. If defined, this symbol is the size of the interrupt stack in bytes. If not defined, the user task stacks will be used during interrupt handling. CONFIG_ARCH_STACKDUMP - Do stack dumps after assertions CONFIG_ARCH_LEDS - Use LEDs to show state. Unique to board architecture. CONFIG_ARCH_CALIBRATION - Enables some build in instrumentation that cause a 100 second delay during boot-up. This 100 second delay serves no purpose other than it allows you to calibratre CONFIG_ARCH_LOOPSPERMSEC. You simply use a stop watch to measure the 100 second delay then adjust CONFIG_ARCH_LOOPSPERMSEC until the delay actually is 100 seconds. PIC32MX Configuration CONFIG_PIC32MX_MVEC - Select muli- vs. single-vectored interrupts Individual subsystems can be enabled: CONFIG_PIC32MX_WDT - Watchdog timer CONFIG_PIC32MX_T2 - Timer 2 (Timer 1 is the system time and always enabled) CONFIG_PIC32MX_T3 - Timer 3 CONFIG_PIC32MX_T4 - Timer 4 CONFIG_PIC32MX_T5 - Timer 5 CONFIG_PIC32MX_IC1 - Input Capture 1 CONFIG_PIC32MX_IC2 - Input Capture 2 CONFIG_PIC32MX_IC3 - Input Capture 3 CONFIG_PIC32MX_IC4 - Input Capture 4 CONFIG_PIC32MX_IC5 - Input Capture 5 CONFIG_PIC32MX_OC1 - Output Compare 1 CONFIG_PIC32MX_OC2 - Output Compare 2 CONFIG_PIC32MX_OC3 - Output Compare 3 CONFIG_PIC32MX_OC4 - Output Compare 4 CONFIG_PIC32MX_OC5 - Output Compare 5 CONFIG_PIC32MX_I2C1 - I2C 1 CONFIG_PIC32MX_I2C2 - I2C 2 CONFIG_PIC32MX_I2C3 - I2C 3 CONFIG_PIC32MX_I2C4 - I2C 4 CONFIG_PIC32MX_I2C5 - I2C 5 CONFIG_PIC32MX_SPI1 - SPI 1 CONFIG_PIC32MX_SPI2 - SPI 2 CONFIG_PIC32MX_SPI3 - SPI 3 CONFIG_PIC32MX_SPI4 - SPI 4 CONFIG_PIC32MX_UART1 - UART 1 CONFIG_PIC32MX_UART2 - UART 2 CONFIG_PIC32MX_UART3 - UART 3 CONFIG_PIC32MX_UART4 - UART 4 CONFIG_PIC32MX_UART5 - UART 5 CONFIG_PIC32MX_UART6 - UART 6 CONFIG_PIC32MX_ADC - ADC 1 CONFIG_PIC32MX_PMP - Parallel Master Port CONFIG_PIC32MX_CM1 - Comparator 1 CONFIG_PIC32MX_CM2 - Comparator 2 CONFIG_PIC32MX_RTCC - Real-Time Clock and Calendar CONFIG_PIC32MX_DMA - DMA CONFIG_PIC32MX_FLASH - FLASH CONFIG_PIC32MX_USBDEV - USB device CONFIG_PIC32MX_USBHOST - USB host CONFIG_PIC32MX_CAN1 - Controller area network 1 CONFIG_PIC32MX_CAN2 - Controller area network 2 CONFIG_PIC32MX_ETHERNET - Ethernet PIC32MX Configuration Settings DEVCFG0: CONFIG_PIC32MX_DEBUGGER - Background Debugger Enable. Default 3 (disabled). The value 2 enables. CONFIG_PIC32MX_ICESEL - In-Circuit Emulator/Debugger Communication Channel Select Default 1 (PG2) CONFIG_PIC32MX_PROGFLASHWP - Program FLASH write protect. Default 0xff (disabled) CONFIG_PIC32MX_BOOTFLASHWP - Default 1 (disabled) CONFIG_PIC32MX_CODEWP - Default 1 (disabled) DEVCFG1: (All settings determined by selections in board.h) DEVCFG2: (All settings determined by selections in board.h) DEVCFG3: CONFIG_PIC32MX_USBIDO - USB USBID Selection. Default 1 if USB enabled (USBID pin is controlled by the USB module), but 0 (GPIO) otherwise. CONFIG_PIC32MX_VBUSIO - USB VBUSON Selection (Default 1 if USB enabled (VBUSON pin is controlled by the USB module, but 0 (GPIO) otherwise. CONFIG_PIC32MX_WDENABLE - Enabled watchdog on power up. Default 0 (watchdog can be enabled later by software). The priority of interrupts may be specified. The value ranage of priority is 4-31. The default (16) will be used if these any of these are undefined. CONFIG_PIC32MX_CTPRIO - Core Timer Interrupt CONFIG_PIC32MX_CS0PRIO - Core Software Interrupt 0 CONFIG_PIC32MX_CS1PRIO - Core Software Interrupt 1 CONFIG_PIC32MX_INT0PRIO - External Interrupt 0 CONFIG_PIC32MX_INT1PRIO - External Interrupt 1 CONFIG_PIC32MX_INT2PRIO - External Interrupt 2 CONFIG_PIC32MX_INT3PRIO - External Interrupt 3 CONFIG_PIC32MX_INT4PRIO - External Interrupt 4 CONFIG_PIC32MX_FSCMPRIO - Fail-Safe Clock Monitor CONFIG_PIC32MX_T1PRIO - Timer 1 (System timer) priority CONFIG_PIC32MX_T2PRIO - Timer 2 priority CONFIG_PIC32MX_T3PRIO - Timer 3 priority CONFIG_PIC32MX_T4PRIO - Timer 4 priority CONFIG_PIC32MX_T5PRIO - Timer 5 priority CONFIG_PIC32MX_IC1PRIO - Input Capture 1 CONFIG_PIC32MX_IC2PRIO - Input Capture 2 CONFIG_PIC32MX_IC3PRIO - Input Capture 3 CONFIG_PIC32MX_IC4PRIO - Input Capture 4 CONFIG_PIC32MX_IC5PRIO - Input Capture 5 CONFIG_PIC32MX_OC1PRIO - Output Compare 1 CONFIG_PIC32MX_OC2PRIO - Output Compare 2 CONFIG_PIC32MX_OC3PRIO - Output Compare 3 CONFIG_PIC32MX_OC4PRIO - Output Compare 4 CONFIG_PIC32MX_OC5PRIO - Output Compare 5 CONFIG_PIC32MX_I2C1PRIO - I2C 1 CONFIG_PIC32MX_I2C2PRIO - I2C 2 CONFIG_PIC32MX_I2C3PRIO - I2C 3 CONFIG_PIC32MX_I2C4PRIO - I2C 4 CONFIG_PIC32MX_I2C5PRIO - I2C 5 CONFIG_PIC32MX_SPI2PRIO - SPI 2 CONFIG_PIC32MX_UART1PRIO - UART 1 CONFIG_PIC32MX_UART2PRIO - UART 2 CONFIG_PIC32MX_CN - Input Change Interrupt CONFIG_PIC32MX_ADCPRIO - ADC1 Convert Done CONFIG_PIC32MX_PMPPRIO - Parallel Master Port CONFIG_PIC32MX_CM1PRIO - Comparator 1 CONFIG_PIC32MX_CM2PRIO - Comparator 2 CONFIG_PIC32MX_FSCMPRIO - Fail-Safe Clock Monitor CONFIG_PIC32MX_RTCCPRIO - Real-Time Clock and Calendar CONFIG_PIC32MX_DMA0PRIO - DMA Channel 0 CONFIG_PIC32MX_DMA1PRIO - DMA Channel 1 CONFIG_PIC32MX_DMA2PRIO - DMA Channel 2 CONFIG_PIC32MX_DMA3PRIO - DMA Channel 3 CONFIG_PIC32MX_DMA4PRIO - DMA Channel 4 CONFIG_PIC32MX_DMA5PRIO - DMA Channel 5 CONFIG_PIC32MX_DMA6PRIO - DMA Channel 6 CONFIG_PIC32MX_DMA7PRIO - DMA Channel 7 CONFIG_PIC32MX_FCEPRIO - Flash Control Event CONFIG_PIC32MX_USBPRIO - USB PIC32MXx specific device driver settings. NOTE: For the Ethernet starter kit, there is no RS-232 connector (even with the MEB). See discussion above ("") for information about how you can configure an external MAX2232 board to get a serial console. CONFIG_UARTn_SERIAL_CONSOLE - selects the UARTn for the console and ttys0 (default is the UART0). CONFIG_UARTn_RXBUFSIZE - Characters are buffered as received. This specific the size of the receive buffer CONFIG_UARTn_TXBUFSIZE - Characters are buffered before being sent. This specific the size of the transmit buffer CONFIG_UARTn_BAUD - The configure BAUD of the UART. Must be CONFIG_UARTn_BITS - The number of bits. Must be either 7 or 8. CONFIG_UARTn_PARTIY - 0=no parity, 1=odd parity, 2=even parity CONFIG_UARTn_2STOP - Two stop bits PIC32MX specific PHY/Ethernet device driver settings CONFIG_PHY_KS8721 - Selects the Micrel KS8721 PHY CONFIG_PHY_DP83848C - Selects the National Semiconduction DP83848C PHY CONFIG_PHY_LAN8720 - Selects the SMSC LAN8720 PHY CONFIG_PHY_AUTONEG - Enable auto-negotion CONFIG_PHY_SPEED100 - Select 100Mbit vs. 10Mbit speed. CONFIG_PHY_FDUPLEX - Select full (vs. half) duplex CONFIG_NET_NTXDESC - Configured number of Tx descriptors. Default: 2 CONFIG_NET_NRXDESC - Configured number of Rx descriptors. Default: 4 CONFIG_NET_PRIORITY - Ethernet interrupt priority. The is default is the higest priority. CONFIG_NET_WOL - Enable Wake-up on Lan (not fully implemented). CONFIG_NET_DUMPPACKET - Dump all received and transmitted packets. Also needs CONFIG_DEBUG. CONFIG_NET_REGDEBUG - Enabled low level register debug. Also needs CONFIG_DEBUG. CONFIG_NET_HASH - Enable receipt of near-perfect match frames. CONFIG_NET_MULTICAST - Enable receipt of multicast (and unicast) frames. Automatically set if CONFIG_NET_IGMP is selected. Related DEVCFG3 Configuration Settings: CONFIG_PIC32MX_FETHIO: Ethernet I/O Pin Selection bit: 1 = Default Ethernet I/O Pins 0 = Alternate Ethernet I/O Pins CONFIG_PIC32MX_FMIIEN: Ethernet MII Enable bit 1 = MII enabled 0 = RMII enabled PIC32MXx USB Device Configuration PIC32MXx USB Host Configuration (the PIC32MX does not support USB Host) Configurations ============== Each PIC32MX configuration is maintained in a sudirectory and can be selected as follow: cd tools ./configure.sh pic32mx7mmb/ cd - . ./setenv.sh Where is one of the following: ostest: ======= Description. ------------ This configuration directory, performs a simple OS test using apps/examples/ostest. Serial Output. -------------- The OS test produces all of its test output on the serial console. This configuration has UART1 enabled as a serial console. nsh: ==== Description. ------------ This is the NuttShell (NSH) using the NSH startup logic at apps/examples/nsh. Serial Output. -------------- The OS test produces all of its test output on the serial console. This configuration has UART1 enabled as a serial console. USB Configuations. ----------------- Several USB device configurations can be enabled and included as NSH built-in built in functions. To use USB device, connect the starter kit to the host using a cable with a Type-B micro-plug to the starter kit’s micro-A/B port J5, located on the bottom side of the starter kit. The other end of the cable must have a Type-A plug. Connect it to a USB host. Jumper JP2 should be removed. All USB device configurations require the following basic setup in your NuttX configuration file to enable USB device support: CONFIG_USBDEV=y : Enable basic USB device support CONFIG_PIC32MX_USBDEV=y : Enable PIC32 USB device support examples/usbterm - This option can be enabled by uncommenting the following line in the appconfig file: CONFIGURED_APPS += examples/usbterm And by enabling one of the USB serial devices: CONFIG_PL2303=y : Enable the Prolifics PL2303 emulation CONFIG_CDCACM=y : or the CDC/ACM serial driver (not both) examples/cdcacm - The examples/cdcacm program can be included as an function by uncommenting the following line in the appconfig file: CONFIGURED_APPS += examples/cdcacm and defining the following in your .config file: CONFIG_CDCACM=y : Enable the CDCACM device examples/usbstorage - There are some hooks in the appconfig file to enable the USB mass storage device. However, this device cannot work until support for the SD card is also incorporated. Networking Configuations. ------------------------- Several Networking configurations can be enabled and included as NSH built-in built in functions. The following additional configuration settings are required: CONFIG_NET=y : Enable networking support CONFIG_PIC32MX_ETHERNET=y : Enable the PIC32 Ethernet driver CONFIG_NSH_TELNET=y : Enable the Telnet NSH console (optional) NOTES: 1. This logic will assume that a network is connected. During its initialization, it will try to negotiate the link speed. If you have no network connected when you reset the board, there will be a long delay (maybe 30 seconds?) before anything happens. That is the timeout before the networking finally gives up and decides that no network is available. 2. This example can support an FTP client. In order to build in FTP client support simply uncomment the following lines in the appconfig file (before configuring) or in the apps/.config file (after configuring): #CONFIGURED_APPS += netutils/ftpc #CONFIGURED_APPS += examples/ftpc 3. This example can support an FTP server. In order to build in FTP server support simply uncomment the following lines in the appconfig file (before configuring) or in the apps/.config file (after configuring): #CONFIGURED_APPS += netutils/ftpd #CONFIGURED_APPS += examples/ftpd And enable poll() support in the NuttX configuration file: CONFIG_DISABLE_POLL=n Using a RAM disk and the USB MSC device with nsh and nsh2 --------------------------------------------------------- Here is an experimental change to either examples/nsh or examples/nsh2 that will create a RAM disk and attempt to export that RAM disk as a USB mass storage device. 1. Changes to nuttx/.config a) Enable support for the PIC32 USB device -CONFIG_PIC32MX_USBDEV=n +CONFIG_PIC32MX_USBDEV=y b) Enable NuttX USB device support -CONFIG_USBDEV=n +CONFIG_USBDEV=y c) Enable the USB MSC class driver -CONFIG_USBMSC=n +CONFIG_USBMSC=y d) Use a RAM disk (instead of an SD card) as the USB MSC logical unit: -CONFIG_EXAMPLES_USBMSC_DEVPATH1="/dev/mmcsd0" +CONFIG_EXAMPLES_USBMSC_DEVPATH1="/dev/ram0" 2. Changes to nuttx/.config. a) Enable building of the examples/usbstorage: -# CONFIGURED_APPS += examples/usbstorage + CONFIGURED_APPS += examples/usbstorage 3. When NSH first comes up, you must manually create the RAM disk before exporting it: a) Create a 64Kb RAM disk at /dev/ram0: nsh> mkrd -s 512 128 b) Put a FAT file system on the RAM disk: nsh> mkfatfs /dev/ram0 b) Now the 'msconn' command will connect to the host and export /dev/ram0 as the USB logical unit: nsh> msconn NOTE: This modification should be considered experimental. IN the little testing I have done with it, it appears functional. But the logic has not been stressed and there could still be lurking issues. Update. The following was added to the top-level TODO list: Title: PIC32 USB DRIVER DOES NOT WORK WITH MASS STORAGE CLASS Description: The PIC32 USB driver either crashes or hangs when used with the mass storage class when trying to write files to the target storage device. This usually works with debug on, but does not work with debug OFF (implying some race condition?) Here are some details of what I see in debugging: 1. The USB MSC device completes processing of a read request and returns the read request to the driver. 2. Before the MSC device can even begin the wait for the next driver, many packets come in at interrupt level. The MSC device goes to sleep (on pthread_cond_wait) with all of the read buffers ready (16 in my test case). 3. The pthread_cond_wait() does not wake up. This implies a problem with pthread_con_wait(?). But in other cases, the MSC device does wake up, but then immediately crashes because its stack is bad. 4. If I force the pthread_cond_wait to wake up (by using pthread_cond_timedwait instead), then the thread wakes up and crashes with a bad stack. So far, I have no clue why this is failing. Status: Open Priority: High