mirror of
https://github.com/apache/nuttx.git
synced 2026-06-06 00:14:22 +08:00
Add a general bit-bang SPI upper-half driver
This commit is contained in:
Gregory Nutt
@@ -52,6 +52,23 @@ else
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CSRCS += sam_userleds.c
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endif
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ifeq ($(CONFIG_ARDUINO_ITHEAD_TFT),y)
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ifeq ($(CONFIG_SPI_BITBANG),y)
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ifeq ($(CONFIG_MMC_SPI),y)
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CSRCS += sam_mmcsd.c
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endif
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ifeq ($(CONFIG_INPUT),y)
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CSRCS += sam_touchscreen.c
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endif
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endif
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ifeq ($(CONFIG_LCD),y)
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CSRCS += sam_lcd.c
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endif
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endif
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COBJS = $(CSRCS:.c=$(OBJEXT))
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SRCS = $(ASRCS) $(CSRCS)
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@@ -97,6 +97,163 @@
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#define GPIO_LED_TX (GPIO_OUTPUT | GPIO_CFG_PULLUP | GPIO_OUTPUT_SET | \
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GPIO_PORT_PIOA | GPIO_PIN21)
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/* ITEAD 2.4" TFT with Touch
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*
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* The Arduino 2.4" TFT Touch Shield is designed for all the Arduino
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* compatible boards. It works in 3.3V voltage level. It can be directly
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* plugged on the Arduino and other compatible boards. It will offer
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* display, touch and storage functions for the Arduino board
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*
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* Features:
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*
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* 1. Compatible with 3.3/5V operation voltage level
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* 2. Compatible with UTFT library
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* 3. With SD Card Socket
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*
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* The Arduino 2.4" TFT Touch shield uses the S6D1121 controller , it
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* supports 8-bit data interface. The touch IC is TSC2046.
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*
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* ---------- --------------------------- ----------- ----- ---------- ------------------
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* Arduino ATSAM3X Due ITHEAD
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* Due PIN GPIO FUNCTION SIGNAL PIN SIGNAL NOTES
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* ---------- ---- ---------------------- ----------- ----- ---------- ------------------
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* PWMH
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* 10 SCL1 PA18 TWCK0/A20/WKUP9 SCL1 --- --- SCL not available
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* 9 SDA1 PA17 TWD0SPCK0 SDA1 --- --- SDA not available
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* 8 Aref --- --- AREF Vref --- ---
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* 7 GND --- --- GND GND --- ---
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* 6 PWM13 PB27 SPI0_SPCK/A20/WKUP10 PWM13 D13 SD_SCK SCK, also LED "L", Pulled low on-board
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* 5 PWM12 PD8 A21/NANDALE/TIOB8 PWM12 D12 SD_MISO MISO not available
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* 4 PWM11 PD7 A17/BA1/TIOA8 PWM11 D11 SD_MOSI MOSI not available, Pulled low on-board
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* 3 PWM10 ??? ??? SS0/PWM10 D10 SD_CS Pulled low on-board
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* 2 PWM9 PC21 A0/NBS0/PWML4 PWM9 D9 Touch_Dout ---
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* 1 PWM8 PC22 A1/PWML5 PWM8 D8 Touch_IRQ ---
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* PWML
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* 8 PWM7 PC23 A2/PWML6 PWM7 D7 DB15 ---
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* 7 PWM6 PC24 A3/PWML7 PWM6 D6 DB14 ---
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* 6 PWM5 PC25 A4/TIOA6 PWM5 D5 DB13 ---
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* 5 PWM4 PC26 A5/TIOB6 SS1/PWM4 D4 DB12 ---
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* 4 PWM3 PC28 A7/TIOA7 PWM3 D3 DB11 ---
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* 3 PWM2 PB25 RTS0/TIOA0 PWM2 D2 DB10 ---
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* 2 PWM1 PA9 UTXD/PWMH3 TX D1 DB9 UART0 TX
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* 1 PWM0 PA8 URXD/PWMH0/WKUP4 RX D0 DB8 UART0 RX
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* ---------- ---- ---------------------- ----------- ----- ---------- ------------------
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* POWER
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* 1 --- --- --- --- --- --- ---
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* 2 IOref --- --- IOREF +3V3 --- --- ---
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* 3 RESET --- --- MASTER_RESET RST --- ---
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* 4 3.3V --- --- +3V3 5V --- ---
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* 5 5V --- --- +5V 3.3V --- ---
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* 6 GND --- --- GND GND --- ---
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* 7 GND --- --- GND GND --- ---
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* 8 Vin --- --- VIN Vin --- ---
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* ADCL
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* 1 A0 PA16 SPCK1/TD/AD7 AD0 A0 Touch_Din ---
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* 2 A1 PA24 MCDA3/PCK1/AD6 AD1 A1 Touch_CLK ---
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* 3 A2 PA23 MCDA2/TCLK4/AD5 AD2 A2 --- ---
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* 4 A3 PA22 MCDA1/TCLK3/AD4 AD3 A3 TFT_CS ---
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* 5 A4 PA6 TIOB2/NCS0/AD3 AD4 A4 TFT_WR ---
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* 6 A5 PA4 TCLK1/NWAIT/AD2 AD5 A5 TFT_RS ---
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* 7 A6 PA3 TIOB1/PWMFI1/AD1/WKUP1 AD6 --- --- ---
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* 8 A7 PA2 TIOA1/NANDRDY/AD0 AD7 --- --- ---
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* ---------- ---- ---------------------- ----------- ----- ---------- ------------------
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*
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* NOTES:
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*
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* 1. It is not possible to use any of the SPI devices on the Shield unless
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* a bit-bang SPI interface is used. This includes the touch controller
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* and the SD card.
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* 2. UART0 cannot be used. USARTs on the COMM connector should be available.
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* 3. Parallel data is not contiguous in the PIO register
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* 4. 3.3V and 5V are reversed.
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*/
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#ifdef CONFIG_ARDUINO_ITHEAD_TFT
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/* In order to use the SD card on the ITEAD shield, you must enable the
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* SPI bit-bang driver as well as support for SPI-based MMC/SD cards.
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*/
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# if defined(CONFIG_SPI_BITBANG) && defined(CONFIG_MMC_SPI)
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/* The SD slot shares the pin with LED "L" so LED support must be disabled
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* to use the MMC/SD card on the ITEAD shield.
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*/
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# ifdef CONFIG_ARCH_LEDs
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# error LEDs may not be used with the ITEAD SD card
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# endif
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# define GPIO_SD_SCK (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOB | GPIO_PIN27)
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# define GPIO_SD_MISO (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOD | GPIO_PIN8)
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# define GPIO_SD_MOSI (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOD | GPIO_PIN7)
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# define GPIO_SD_CS (GPIO_OUTPUT | GPIO_CFG_PULLUP | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIO? | GPIO_PIN?)
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# endif
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/* In order to use the touchscreen on the ITEAD shield, you must enable the
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* SPI bit-bang driver and INPUT device support.
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*/
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# if defined(CONFIG_SPI_BITBANG) && defined(CONFIG_INPUT)
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# define GPIO_TSC_SCK (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOA | GPIO_PIN24)
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# define GPIO_TSC_MISO (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOC | GPIO_PIN21)
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# define GPIO_TSC_MOSI (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOA | GPIO_PIN16)
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# define GPIO_TSC_CS (GPIO_OUTPUT | GPIO_CFG_PULLUP | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIO? | GPIO_PIN?)
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# define GPIO_TSC_IRQ (GPIO_INPUT | GPIO_CFG_PULLUP | GPIO_INT_BOTHEDGES | \
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GPIO_PORT_PIOC | GPIO_PIN22)
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# define SAM_TCS_IRQ SAM_IRQ_PC21
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# endif
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/* Only CONFIG_LCD is expected to enable the TFT LCD */
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# ifdef CONFIG_LCD
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/* UART0 cannot be used with the LCD because the UART0 pins are used
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* by the LCD.
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*/
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# ifdef CONFIG_SAM34_UART0
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# error "UART0 cannot be used with the ITEAD LCD"
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# endif
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/* Data pins are initially configured but may be switched dynamically to
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* either inputs or outputs as needed.
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*/
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# define GPIO_LCD_D0IN (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOA | GPIO_PIN8)
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# define GPIO_LCD_D1IN (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOA | GPIO_PIN9)
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# define GPIO_LCD_D2IN (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOB | GPIO_PIN25)
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# define GPIO_LCD_D3IN (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOC | GPIO_PIN28)
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# define GPIO_LCD_D4IN (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOC | GPIO_PIN26)
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# define GPIO_LCD_D5IN (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOC | GPIO_PIN25)
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# define GPIO_LCD_D6IN (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOC | GPIO_PIN24)
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# define GPIO_LCD_D7IN (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOC | GPIO_PIN23)
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# define GPIO_LCD_D7IN (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOC | GPIO_PIN23)
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# define GPIO_LCD_CS (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOA | GPIO_PIN22)
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# define GPIO_LCD_WR (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOA | GPIO_PIN6)
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# define GPIO_LCD_RS (GPIO_OUTPUT | GPIO_CFG_DEFAULT | GPIO_OUTPUT_CLR | \
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GPIO_PORT_PIOA | GPIO_PIN4)
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# endif
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#endif
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/************************************************************************************
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* Public Types
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************************************************************************************/
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