SAMV17-XULT: Can't use UART3 when LCD is conencted, switch to USART0
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Gregory Nutt
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@ -152,6 +152,21 @@ use either the VCOM or an external RS-232 driver. Here are some options.
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5VO Vcc
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--------- -----------
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- Arduino Communications. Additional UART/USART connections are available
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on the Arduino Communications connection J505:
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------ ------ ------- ------- --------
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Pin on SAMV71 Arduino Arduino SAMV71
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J503 PIO Name Pin Function
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------ ------ ------- ------- --------
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3 PD18 RX1 0 URXD4
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4 PD19 TX1 0 UTXD4
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5 PD15 RX2 0 RXD2
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6 PD16 TX2 0 TXD2
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7 PB0 RX3 0 RXD0
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8 PB1 TX3 1 TXD0
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------ ------ ------- ------- --------
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- SAMV7-XULT EXTn connectors. USART pins are also available the EXTn
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connectors. The following are labelled in the User Guide for USART
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functionality:
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@ -848,6 +863,22 @@ in the OFF-ON-OFF positions to select 16-bit color mode.
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50 GND - - Ground
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---- ------------ ---- -------- -----------------------------------------------------------
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Connecting the flat cable. I was embarrassed to say that I did not know how
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the connectors worked. Let me share this so that, perhaps, I can save you
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the same embarrassment:
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- The maXTouch Xplained Pro has an Omron XF2M-5015-1A connector. There is a
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black bar at back (toward the baord). Raise that bar and insert the cable
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with the contacts away from the board. Lower that bar to lock the cable
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in place.
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- The SAMV71-Xult has a TE Connectivity 5-1734839-0 FPC connector that works
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differently. On each size of the connector are two small white tabs. Pull
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these out and away from the board. Insert the ribbon with the contacts
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toward the board. Lock the cable in place by pushing the tabs back in
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place.
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MXT Configuration Options
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-------------------------
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@ -982,7 +1013,7 @@ NOTES:
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reconfiguration process.
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2. Unless stated otherwise, all configurations generate console
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output on USART3 (i.e., for the Arduino serial shield).
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output on UART3 (i.e., for the Arduino serial shield).
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3. All of these configurations are set up to build under Windows using the
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"GNU Tools for ARM Embedded Processors" that is maintained by ARM
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@ -1015,7 +1046,7 @@ NOTES:
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Configuration sub-directories
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-----------------------------
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mxtxplned:
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mxtxplnd:
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Configures the NuttShell (nsh) located at examples/nsh. There are three
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very similar NSH configurations:
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@ -1036,15 +1067,42 @@ Configuration sub-directories
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2. Basic touchscreen/LCD configuration settings are discussed above in
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the paragraph entitled, "maXTouch Xplained Pro".
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3. Like the nsh configuration, this configuration has the serial console
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setup to used with an Aduino serial shield (UART3). NOTE: Use of
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EXT1 conflicts with the Arduino RXD pin (PD28). You cannot put the
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maXTouch Xplained in EXT1 and also use the Arduion RXD/TXD pins as
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your serial console.
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3. Unlike the nsh configuration, this configuration has the serial console
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setup to USART0 which is available on EXT1:
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If you need to use EXT1, you will have to re-configure the serial
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console on a different UART/USART. The LCD (EXT4) is configured
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by default.
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----------- --- ------- -----
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Connector PIO Arduino SAMV7
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----------- --- ------- -----
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EXT1 pin 13 PB0 RX3 RXD0
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EXT1 pin 14 PB1 TX3 TXD0
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----------- --- ------- -----
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and also on the Arduino Communications connector (J505):
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----------- --- ------- -----
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Connector PIO Arduino SAMV7
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----------- --- ------- -----
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J505 pin 7 PB0 RX3 RXD0
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J505 pin 8 PB1 TX3 TXD0
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----------- --- ------- -----
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Use of either the EXT1 or the LCD/EXT4 connectors conflict with the
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Arduino RXD pin (UART3, PD28). You cannot put the maXTouch Xplained
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in EXT1 or LCD/EXT4 and also use the Arduino RXD/TXD pins as your
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serial console.
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The LCD (EXT4) is configured by default because only the RGB LCD
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interface is currently supported and that is only available on that
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connector.
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If you plan to use EXT2 for some reason, you may re-configure the
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serial console to use UART3, the standard Arduino RXD/TXD. You
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would also, of course, have to disable the LCD.
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NOTE that the USART0 pins PB0 and PB1 conflict with SSC TF and TK
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pins as connected to the WM8904 audio CODEC. So, unless yet a
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different U[S]ART option is selected, Audio cannot be used with
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this configuration.
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4. Support for the ILI8488 LCD is enabled. Only the RGB mode is support
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at present. As a consequence, the maXTouch Xplained Pro must be
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@ -290,11 +290,32 @@
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* 2 PD30 TX0 1 UTXD3
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* ------ ------ ------- ------- --------
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*
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* There are alternative pin selections only for UTXD3:
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* There are alternative pin selections only for UART3 TXD:
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*/
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#define GPIO_UART3_TXD GPIO_UART3_TXD_1
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/* - Arduino Communications. Additional UART/USART connections are available
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* on the Arduino Communications connection J505:
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*
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* ------ ------ ------- ------- --------
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* Pin on SAMV71 Arduino Arduino SAMV71
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* J503 PIO Name Pin Function
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* ------ ------ ------- ------- --------
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* 3 PD18 RX1 0 URXD4
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* 4 PD19 TX1 0 UTXD4
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* 5 PD15 RX2 0 RXD2
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* 6 PD16 TX2 0 TXD2
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* 7 PB0 RX3 0 RXD0
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* 8 PB1 TX3 1 TXD0
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* ------ ------ ------- ------- --------
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*
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* There are alternative pin selections only for UART4 TXD:
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*/
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#define GPIO_UART4_TXD GPIO_UART4_TXD_1
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/* - SAMV7-XULT EXTn connectors. USART pins are also available the EXTn
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* connectors. The following are labelled in the User Guide for USART
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* functionality:
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@ -222,11 +222,11 @@ CONFIG_SAMV7_TWIHS0=y
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# CONFIG_SAMV7_UART0 is not set
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# CONFIG_SAMV7_UART1 is not set
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# CONFIG_SAMV7_UART2 is not set
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CONFIG_SAMV7_UART3=y
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# CONFIG_SAMV7_UART3 is not set
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# CONFIG_SAMV7_UART4 is not set
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# CONFIG_SAMV7_USBDEVHS is not set
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# CONFIG_SAMV7_USBHOSTHS is not set
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# CONFIG_SAMV7_USART0 is not set
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CONFIG_SAMV7_USART0=y
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# CONFIG_SAMV7_USART1 is not set
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# CONFIG_SAMV7_USART2 is not set
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# CONFIG_SAMV7_WDT0 is not set
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@ -590,7 +590,7 @@ CONFIG_SERIAL=y
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# CONFIG_ARCH_HAVE_UART0 is not set
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# CONFIG_ARCH_HAVE_UART1 is not set
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# CONFIG_ARCH_HAVE_UART2 is not set
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CONFIG_ARCH_HAVE_UART3=y
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# CONFIG_ARCH_HAVE_UART3 is not set
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# CONFIG_ARCH_HAVE_UART4 is not set
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# CONFIG_ARCH_HAVE_UART5 is not set
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# CONFIG_ARCH_HAVE_UART6 is not set
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@ -598,7 +598,7 @@ CONFIG_ARCH_HAVE_UART3=y
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# CONFIG_ARCH_HAVE_UART8 is not set
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# CONFIG_ARCH_HAVE_SCI0 is not set
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# CONFIG_ARCH_HAVE_SCI1 is not set
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# CONFIG_ARCH_HAVE_USART0 is not set
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CONFIG_ARCH_HAVE_USART0=y
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# CONFIG_ARCH_HAVE_USART1 is not set
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# CONFIG_ARCH_HAVE_USART2 is not set
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# CONFIG_ARCH_HAVE_USART3 is not set
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@ -612,27 +612,28 @@ CONFIG_ARCH_HAVE_UART3=y
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#
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# USART Configuration
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#
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CONFIG_USART0_ISUART=y
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CONFIG_MCU_SERIAL=y
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CONFIG_STANDARD_SERIAL=y
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# CONFIG_SERIAL_IFLOWCONTROL is not set
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# CONFIG_SERIAL_OFLOWCONTROL is not set
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CONFIG_ARCH_HAVE_SERIAL_TERMIOS=y
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# CONFIG_SERIAL_TERMIOS is not set
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CONFIG_UART3_SERIAL_CONSOLE=y
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CONFIG_USART0_SERIAL_CONSOLE=y
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# CONFIG_OTHER_SERIAL_CONSOLE is not set
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# CONFIG_NO_SERIAL_CONSOLE is not set
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#
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# UART3 Configuration
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# USART0 Configuration
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#
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CONFIG_UART3_RXBUFSIZE=256
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CONFIG_UART3_TXBUFSIZE=256
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CONFIG_UART3_BAUD=115200
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CONFIG_UART3_BITS=8
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CONFIG_UART3_PARITY=0
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CONFIG_UART3_2STOP=0
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# CONFIG_UART3_IFLOWCONTROL is not set
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# CONFIG_UART3_OFLOWCONTROL is not set
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CONFIG_USART0_RXBUFSIZE=256
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CONFIG_USART0_TXBUFSIZE=256
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CONFIG_USART0_BAUD=115200
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CONFIG_USART0_BITS=8
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CONFIG_USART0_PARITY=0
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CONFIG_USART0_2STOP=0
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# CONFIG_USART0_IFLOWCONTROL is not set
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# CONFIG_USART0_OFLOWCONTROL is not set
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# CONFIG_USBDEV is not set
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# CONFIG_USBHOST is not set
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# CONFIG_WIRELESS is not set
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