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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-12-23 23:36:34 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2011-12-23 23:36:34 +0000 |
commit | ab6667ad8cb8da2a9f54fe80ce164e06e9ebd60a (patch) | |
tree | 8b239ec69268c044578c48c1c406f59cc856c767 /nuttx/configs/pic32-starterkit | |
parent | 617ec57ee062782a59650a5c5cf8cba44c53adc7 (diff) | |
download | px4-nuttx-ab6667ad8cb8da2a9f54fe80ce164e06e9ebd60a.tar.gz px4-nuttx-ab6667ad8cb8da2a9f54fe80ce164e06e9ebd60a.tar.bz2 px4-nuttx-ab6667ad8cb8da2a9f54fe80ce164e06e9ebd60a.zip |
PIC32 Serial Console fixes
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@4221 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/configs/pic32-starterkit')
-rw-r--r-- | nuttx/configs/pic32-starterkit/README.txt | 145 |
1 files changed, 142 insertions, 3 deletions
diff --git a/nuttx/configs/pic32-starterkit/README.txt b/nuttx/configs/pic32-starterkit/README.txt index 70fd4df43..94dcc8403 100644 --- a/nuttx/configs/pic32-starterkit/README.txt +++ b/nuttx/configs/pic32-starterkit/README.txt @@ -49,8 +49,10 @@ Contents PIC32MX795F512L Pin Out MEB Connector + PICtail Toolchains Loading NuttX with PICkit2 + Serial Console PIC32MX Configuration Options Configurations @@ -227,6 +229,11 @@ PIN CONFIGURATIONS SIGNAL NAME ON-BOARD CONNE MEB Connector ============= +The following table summarizes how the pins brought the the MEB through the +J2 on the Ethernet Starter Kit are mapped. This connect is J2 on the Ethernet +Starter Kit and J3 on the MEB. + + J3 PIC32 SIGNAL PIN CONNECTION -------------------------- ------- ---------------------------------- PMPD0 pin 23 Graphics Controller (SSD1926) @@ -320,6 +327,46 @@ U2TX pin 112 (see CPLD) ~U2RTS pin 106 (see CPLD) ~U2CTS pin 108 (see CPLD) +PICtail +======= + +The MEB brings many of the signals out via the PICtail (J5). J5 is +a 28 pin connector bringing out signals as summarized here (J3 is the +designation of the connection to the Ethernet starter kit on the +MEB side): + +--- --- ------------------------ +J3 J5 Table 2-1 +PIN PIN Description +--- --- ------------------------ + 1 3.3V + 2 I/O_4 (Test Point) + 76 3 SCL2 + 84 4 SCL1 + 74 5 SDA2 + 86 6 SDA1 + 47 7 SDI2/SDI2A/CN9/RG7 + 97 8 SS1, WFI_SDO + 49 9 SDO2/SDO2A + 10 WFI_SDI + 45 11 SCK2/SCK2A + 12 WFI_SCK + 51 13 SS2/SS2A/RG9 + 14 SS1/RB2 + 88 15 U1RX/SDI1A +110 16 U2RX/SDI3A + 90 17 U1TX/RA10 +112 18 U2TX/SDO3A + 92 19 U1RTS/C2OUT/AN9 +106 20 U2RTS/SCK3A + 94 21 U1CTS/SDO1A +108 22 U2CTS/SS3A/RF12 + 73 23 RB9/INT1/RE8 + 115 25 RA10/SCK1A + 26 3.3V + 85 27 INT1/SS1/RD14 + 28 GND + Toolchains ========== @@ -424,6 +471,97 @@ Loading NuttX with PICkit2 # to the top-level build directory. It is the only # required input to mkpichex. +Serial Console +============== + + A serial console is not required to use NuttX. However, all of the + Nuttx example code in the apps/examples assumes that you have a + serial console. The Ethernet Starter Kit(even with the MEB) does not + have any RS-232 connector needed to drive the serial console. + + Raw UART signals are available at the MEB's PICtail connector, however, + and can be connected to an external MAX2232 board to get a serial console. + The defconfig files are set up to use UART2. So the proper connections + would be: + + PICtail + PIN FUNCTION + -------- ----------- + 1 3.3V + 16 U2RX + 18 U2TX + 28 GND + + UART1 is also brought out on the PICtail and would be connected as: + + PICtail + PIN FUNCTION + -------- ----------- + 1 3.3V + 15 U1RX + 17 U1TX + 28 GND + + Here is a summary of the tortuous routes taken by the PIC32MX UART pins: + + --- ---------------------------------- -------------------------- ------------------------- + PIN CONFIGURATIONS SIGNAL NAME ON-BOARD CONNECTIONS + (Family Data Sheet Table 1-1) (Starter Kit User Guide) + --- ---------------------------------- -------------------------- ------------------------- + + 39 AC1TX/RF13/SCK4/U2RTS/U5TX SCM3D/BCLK2/RF13 J2 pin 106 (UART2) + 40 AC1RX/RF12/SS4/U2CTS/U5RX SCM3C/RF12 J2 pin 108 (UART2) + 49 PMA9/CN17/RF4/SDA5/SDI4/U2RX PMPA9/SCM3A/CN17/RF4 J2 pin 109 (PMP address) + J2 pin 110 (UART2) + 50 PMA8/CN18/RF5/SCL5/SDO4/U2TX PMPA8/SCM3B/CN18/RF5 J2 pin 111 (PMP address) + J2 pin 112 (UART2) + 52 RF2/SDA3/SDI3/U1RX SCM1A/RF2 J2 pin 88 (UART1) + 53 RF8/SCL3/SDO3/U1TX SCM1B/RF8 J2 pin 90 (UART1) + + J2 is the connector at the bottom of the Ethernet start kit that + mates the Ethernet Starter kit to the MEB. The MEB then makes the + following signals available on the PICtail (J5): + + MEB Connector: + + -------------------------- ------- ---------------------------------- + Signal J3 + -------------------------- ------- + U1RX pin 88 + U1TX pin 90 + ~U1RTS pin 92 + ~U1CTS pin 94 + U2RX pin 110 + U2TX pin 112 + ~U2RTS pin 106 + ~U2CTS pin 108 + -------------------------- ------- + + PICtail: + + The pins are labeled differently in Table 2-1 and in the schematic. This is + confusing. I will trust Table 2-1. + + --- --- ------- --- --- ----------------- + Table 2-1 Schematic + J3 J5 J3 J5 + PIN PIN NAME PIN PIN Description + --- --- ------- ---- --- ------------ + 1 3.3V + 88 15 U1RX 88 15 SDI1A + 110 16 U2RX 110 16 SDI3A + 90 17 U1TX 17 RA10 + 90 SD01A + 112 18 U2TX 113 18 SDO3A + 92 19 U1RTS 19 C2OUT/AN9 + 92 SCK1A + 106 20 U2RTS 106 20 SCK3A + 94 21 U1CTS 21 SDO1A + 94 SS1/RD14 + 108 22 U2CTS 108 22 SS3A/RF12 + 26 3.3V + 28 GND + PIC32MX Configuration Options ============================= @@ -625,9 +763,10 @@ PIC32MX Configuration Options CONFIG_PIC32MX_FCEPRIO - Flash Control Event CONFIG_PIC32MX_USBPRIO - USB - PIC32MXx specific device driver settings. NOTE: For the Sure board, - UART2 is brought out to the DB9 connector and serves as the serial - console. + 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). |