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author | Gregory Nutt <gnutt@nuttx.org> | 2014-02-17 14:52:14 -0600 |
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committer | Gregory Nutt <gnutt@nuttx.org> | 2014-02-17 14:52:14 -0600 |
commit | 4227604c17a8dc26c8b0f679b79945eabb090e9f (patch) | |
tree | c190efccdc735e7bafc653c00bf3b84782cda75e | |
parent | 11e9d1177f46c11cba6d27da78a5c92368d8e349 (diff) | |
download | nuttx-4227604c17a8dc26c8b0f679b79945eabb090e9f.tar.gz nuttx-4227604c17a8dc26c8b0f679b79945eabb090e9f.tar.bz2 nuttx-4227604c17a8dc26c8b0f679b79945eabb090e9f.zip |
SAMD20: Fix some confusion what which pins are on which connectors
-rw-r--r-- | nuttx/configs/samd20-xplained/Kconfig | 9 | ||||
-rw-r--r-- | nuttx/configs/samd20-xplained/README.txt | 23 | ||||
-rw-r--r-- | nuttx/configs/samd20-xplained/include/board.h | 8 |
3 files changed, 29 insertions, 11 deletions
diff --git a/nuttx/configs/samd20-xplained/Kconfig b/nuttx/configs/samd20-xplained/Kconfig index a5273229e..6e3bbbd0e 100644 --- a/nuttx/configs/samd20-xplained/Kconfig +++ b/nuttx/configs/samd20-xplained/Kconfig @@ -63,11 +63,18 @@ config SAMD20_XPLAINED_USART4_EXT1 Select this option if the serial console is on SERCOM4 connected via EXT1. The RX will be on PB9 and TX signal will be on PB8. +config SAMD20_XPLAINED_USART4_EXT2 + bool "EXT2" + depends on !SAMD20_XPLAINED_OLED1MODULE_EXT2 && !SAMD20_XPLAINED_IOMODULE_EXT2 + ---help--- + Select this option if the serial console is on SERCOM4 connected via + EXT2. The RX will be on PB13 and TX signal will be on PB12. + config SAMD20_XPLAINED_USART4_EXT3 bool "EXT3" ---help--- Select this option if the serial console is on SERCOM4 connect via - EXT3. The RX will be on PB13 and TX signal will be on PB12. + EXT3. The RX will be on PB11 and TX signal will be on PB10. endchoice endif diff --git a/nuttx/configs/samd20-xplained/README.txt b/nuttx/configs/samd20-xplained/README.txt index c968c214f..86e7966da 100644 --- a/nuttx/configs/samd20-xplained/README.txt +++ b/nuttx/configs/samd20-xplained/README.txt @@ -403,18 +403,23 @@ Serial Consoles SERCOM4 ------ - SERCOM4 is available on connectors EXT1 and EXT3 + SERCOM4 is available on connectors EXT1, EXT2, and EXT3, but using + different PORT pins: - PIN EXT1 EXT3 GPIO Function - ---- ---- ---- ------------------ - 13 PB09 PB13 SERCOM4 / USART RX - 14 PB08 PB12 SERCOM4 / USART TX - 19 19 GND - 20 20 VCC + PIN EXT1 EXT2 EXT3 GPIO Function + ---- ---- ---- ---- ------------------ + 13 PB09 PB13 PB11 SERCOM4 / USART RX + 14 PB08 PB12 PB12 SERCOM4 / USART TX + 19 GND GND GND N/A + 20 VCC VCC VCC N/A + + There are options available in the NuttX configuration to select which + connector SERCOM4 is on: SAMD20_XPLAINED_USART4_EXTn, where n=1, 2, or 3. If you have a TTL to RS-232 converter then this is the most convenient - serial console to use. It is the default in all of these configurations. - An option is to use the virtual COM port. + serial console to use (because you don't lose the console device each time + you lose the USB connection). It is the default in all of these + configurations. An option is to use the virtual COM port. Virtual COM Port ---------------- diff --git a/nuttx/configs/samd20-xplained/include/board.h b/nuttx/configs/samd20-xplained/include/board.h index 216e38c0b..c7956e8ba 100644 --- a/nuttx/configs/samd20-xplained/include/board.h +++ b/nuttx/configs/samd20-xplained/include/board.h @@ -372,12 +372,18 @@ # define BOARD_SERCOM4_PINMAP_PAD1 PORT_SERCOM4_PAD1_3 # define BOARD_SERCOM4_PINMAP_PAD2 0 # define BOARD_SERCOM4_PINMAP_PAD3 0 -#else /* if defined(CONFIG_SAMD20_XPLAINED_USART4_EXT3) */ +#elif defined(CONFIG_SAMD20_XPLAINED_USART4_EXT2) # define BOARD_SERCOM4_MUXCONFIG (USART_CTRLA_RXPAD1 | USART_CTRLA_TXPAD0) # define BOARD_SERCOM4_PINMAP_PAD0 PORT_SERCOM4_PAD0_1 # define BOARD_SERCOM4_PINMAP_PAD1 PORT_SERCOM4_PAD1_1 # define BOARD_SERCOM4_PINMAP_PAD2 0 # define BOARD_SERCOM4_PINMAP_PAD3 0 +#else /* if defined(CONFIG_SAMD20_XPLAINED_USART4_EXT3) */ +# define BOARD_SERCOM4_MUXCONFIG (USART_CTRLA_RXPAD3 | USART_CTRLA_TXPAD2) +# define BOARD_SERCOM4_PINMAP_PAD0 0 +# define BOARD_SERCOM4_PINMAP_PAD1 0 +# define BOARD_SERCOM4_PINMAP_PAD2 PORT_SERCOM4_PAD2_3 +# define BOARD_SERCOM4_PINMAP_PAD3 PORT_SERCOM4_PAD3_3 #endif #define BOARD_SERCOM4_FREQUENCY BOARD_GCLK0_FREQUENCY |