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Code Issues Releases Wiki Activity

Correct port direction for Arduino MISO signal

This commit is contained in:
Gregory Nutt 2013-07-02 12:37:20 -06:00
parent d09fd9a9ca
commit d6db74e581
2 changed files with 28 additions and 20 deletions
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40
configs/arduino-due/README.txt
View File

@ -122,6 +122,11 @@ ITEAD 2.4" TFT with Touch
The Arduino 2.4" TFT Touch shield uses the S6D1121 controller , it
supports 8-bit data interface. The touch IC is XPT2046.
NOTE: When used with the ITEAD shield, the power from the USB connector
seems to be inefficient (for example, I lose the USB connection when I
insert an SD card). I recommends using a 7-12V power supply with the
Arduino in this case.
Connector:
---------- --------------------------- ----------- --------------------------- ------------------
@ -863,25 +868,28 @@ Configurations
reconfiguration process.
2. Unless stated otherwise, all configurations generate console
output on UART1 which is available on J1 or J4 (see the
section "Serial Consoles" above). USART1 or the virtual COM
port on UART0 are options. The virtual COM port could
be used, for example, by reconfiguring to use UART0 like:
output on UART0 which is available both on the USB virtual COM port
and on the PWML connector (see the section "Serial Consoles" above).
System Type -> AT91SAM3/4 Peripheral Support
CONFIG_SAM_UART0=y
CONFIG_SAM_UART1=n
However, the pin usage by the ITEAD TFT shield conflict with the pin
usage for UART0. In this case you need to switch to USART0 by
modifying the configuration as follows:
Device Drivers -> Serial Driver Support -> Serial Console
CONFIG_UART0_SERIAL_CONSOLE=y
Board Selection -> Peripheral
CONFIG_SAM34_UART0=n : Disable UART0. Can't use with this shield
CONFIG_SAM34_USART0=y : Enable USART0
CONFIG_USART0_ISUART=y
Device Drivers -> Serial Driver Support -> UART0 Configuration
CONFIG_UART0_2STOP=0
CONFIG_UART0_BAUD=115200
CONFIG_UART0_BITS=8
CONFIG_UART0_PARITY=0
CONFIG_UART0_RXBUFSIZE=256
CONFIG_UART0_TXBUFSIZE=256
Device Drivers -> Serial
CONFIG_USART0_SERIAL_CONSOLE=y : Configure the console on USART0
CONFIG_USART0_RXBUFSIZE=256
CONFIG_USART0_TXBUFSIZE=256
CONFIG_USART0_BAUD=115200
CONFIG_USART0_BITS=8
CONFIG_USART0_PARITY=0
CONFIG_USART0_2STOP=0
NOTE: USART0 TTL levels are available on COMM 5 (TXD0) and COMM 6 (RXD0).
3. Unless otherwise stated, the configurations are setup for
Linux (or any other POSIX environment like Cygwin under Windows):

8
configs/arduino-due/src/arduino-due.h
View File

@ -205,8 +205,8 @@
# define GPIO_SD_SCK (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLEAR | \
GPIO_PORT_PIOB | GPIO_PIN27)
# define GPIO_SD_MISO (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLEAR | \
GPIO_PORT_PIOD | GPIO_PIN8)
# define GPIO_SD_MISO (GPIO_INPUT | GPIO_CFG_PULLUP | GPIO_PORT_PIOD | \
GPIO_PIN8)
# define GPIO_SD_MOSI (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLEAR | \
GPIO_PORT_PIOD | GPIO_PIN7)
@ -241,8 +241,8 @@
# define GPIO_TSC_SCK (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLEAR | \
GPIO_PORT_PIOA | GPIO_PIN24)
# define GPIO_TSC_MISO (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLEAR | \
GPIO_PORT_PIOC | GPIO_PIN22)
# define GPIO_TSC_MISO (GPIO_INPUT | GPIO_CFG_PULLUP | GPIO_PORT_PIOC | \
GPIO_PIN22)
# define GPIO_TSC_MOSI (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLEAR | \
GPIO_PORT_PIOA | GPIO_PIN16)