diff options
Diffstat (limited to 'drivers/gdisp/Nokia6610/gdisp_lld_board_olimexsam7ex256.h')
-rw-r--r-- | drivers/gdisp/Nokia6610/gdisp_lld_board_olimexsam7ex256.h | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/drivers/gdisp/Nokia6610/gdisp_lld_board_olimexsam7ex256.h b/drivers/gdisp/Nokia6610/gdisp_lld_board_olimexsam7ex256.h new file mode 100644 index 00000000..b5b4b1d5 --- /dev/null +++ b/drivers/gdisp/Nokia6610/gdisp_lld_board_olimexsam7ex256.h @@ -0,0 +1,199 @@ +/*
+ ChibiOS/RT - Copyright (C) 2012
+ Joel Bodenmann aka Tectu <joel@unormal.org>
+
+ This file is part of ChibiOS-LCD-Driver.
+
+ ChibiOS-LCD-Driver is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ ChibiOS-LCD-Driver is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file gdispNokia6610/gdisp_lld_board_olimexsam7ex256.h
+ * @brief GDISP Graphic Driver subsystem board interface for the Olimex SAM7-EX256 board.
+ *
+ * @addtogroup GDISP
+ * @{
+ */
+
+#ifndef _GDISP_LLD_BOARD_H
+#define _GDISP_LLD_BOARD_H
+
+// mask definitions
+#define BIT0 0x00000001
+#define BIT1 0x00000002
+#define BIT2 0x00000004
+#define BIT3 0x00000008
+#define BIT4 0x00000010
+#define BIT5 0x00000020
+#define BIT6 0x00000040
+#define BIT7 0x00000080
+#define BIT8 0x00000100
+#define BIT9 0x00000200
+#define BIT10 0x00000400
+#define BIT11 0x00000800
+#define BIT12 0x00001000
+#define BIT13 0x00002000
+#define BIT14 0x00004000
+#define BIT15 0x00008000
+#define BIT16 0x00010000
+#define BIT17 0x00020000
+#define BIT18 0x00040000
+#define BIT19 0x00080000
+#define BIT20 0x00100000
+#define BIT21 0x00200000
+#define BIT22 0x00400000
+#define BIT23 0x00800000
+#define BIT24 0x01000000
+#define BIT25 0x02000000
+#define BIT26 0x04000000
+#define BIT27 0x08000000
+#define BIT28 0x10000000
+#define BIT29 0x20000000
+#define BIT30 0x40000000
+#define BIT31 0x80000000
+
+// ******************************************************
+// Pointers to AT91SAM7X256 peripheral data structures
+// ******************************************************
+volatile AT91PS_PIO pPIOA = AT91C_BASE_PIOA;
+volatile AT91PS_PIO pPIOB = AT91C_BASE_PIOB;
+volatile AT91PS_SPI pSPI = AT91C_BASE_SPI0;
+volatile AT91PS_PMC pPMC = AT91C_BASE_PMC;
+volatile AT91PS_PDC pPDC = AT91C_BASE_PDC_SPI0;
+
+/**
+ * @brief Initialise the board for the display.
+ * @notes Performs the following functions:
+ * 1. initialise the spi port used by your display
+ * 2. initialise the reset pin (initial state not-in-reset)
+ * 3. initialise the chip select pin (initial state not-active)
+ * 4. initialise the backlight pin (initial state back-light off)
+ *
+ * @notapi
+ */
+static __inline void GDISP_LLD(init_board)(void) {
+ // *********************************************************************************************
+ // InitSpi( )
+ //
+ // Sets up SPI channel 0 for communications to Nokia 6610 LCD Display
+ //
+ // I/O ports used: PA2 = LCD Reset (set to low to reset)
+ // PA12 = LCD chip select (set to low to select the LCD chip)
+ // PA16 = SPI0_MISO Master In - Slave Out (not used in LCD interface)
+ // PA17 = SPI0_MOSI Master Out - Slave In pin (Serial Data to LCD slave)
+ // PA18 = SPI0_SPCK Serial Clock (to LCD slave)
+ // PB20 = backlight control (normally PWM control, 1 = full on)
+ //
+ // *********************************************************************************************}
+
+ /* This code should really use the ChibiOS driver for these functions */
+
+ // Pin for backlight
+ pPIOB->PIO_CODR = PIOB_LCD_BL_MASK; // Set PB20 to LOW
+ pPIOB->PIO_OER = PIOB_LCD_BL_MASK; // Configure PB20 as output
+
+ // Reset pin
+ pPIOA->PIO_SODR = PIOA_LCD_RESET_MASK; // Set PA2 to HIGH
+ pPIOA->PIO_OER = PIOA_LCD_RESET_MASK; // Configure PA2 as output
+
+ // CS pin - this seems to be ignored
+ // pPIOA->PIO_SODR = BIT12; // Set PA2 to HIGH
+ // pPIOA->PIO_OER = BIT12; // Configure PA2 as output
+
+ // Init SPI0
+ // Disable the following pins from PIO control (will be used instead by the SPI0 peripheral)
+ // BIT12 = PA12 -> SPI0_NPCS0 chip select
+ // BIT16 = PA16 -> SPI0_MISO Master In - Slave Out (not used in LCD interface)
+ // BIT17 = PA17 -> SPI0_MOSI Master Out - Slave In pin (Serial Data to LCD slave)
+ // BIT18 = PA18 -> SPI0_SPCK Serial Clock (to LCD slave)
+ pPIOA->PIO_PDR = BIT12 | BIT16 | BIT17 | BIT18;
+ pPIOA->PIO_ASR = BIT12 | BIT16 | BIT17 | BIT18;
+ pPIOA->PIO_BSR = 0;
+
+ //enable the clock of SPI
+ pPMC->PMC_PCER = 1 << AT91C_ID_SPI0;
+
+ // Fixed mode
+ pSPI->SPI_CR = 0x81; //SPI Enable, Sowtware reset
+ pSPI->SPI_CR = 0x01; //SPI Enable
+
+ //pSPI->SPI_MR = 0xE0019; //Master mode, fixed select, disable decoder, FDIV=1 (MCK), PCS=1110
+ pSPI->SPI_MR = 0xE0011; //Master mode, fixed select, disable decoder, FDIV=0 (MCK), PCS=1110
+
+ //pSPI->SPI_CSR[0] = 0x01010C11; //9bit, CPOL=1, ClockPhase=0, SCLK = 48Mhz/32*12 = 125kHz
+ pSPI->SPI_CSR[0] = 0x01010311; //9bit, CPOL=1, ClockPhase=0, SCLK = 48Mhz/8 = 6MHz if using commented MR line above
+}
+
+/**
+ * @brief Set or clear the lcd reset pin.
+ *
+ * @param[in] state TRUE = lcd in reset, FALSE = normal operation
+ *
+ * @notapi
+ */
+static __inline void GDISP_LLD(setpin_reset)(bool_t state) {
+ if (state)
+ palClearPad(IOPORT1, PIOA_LCD_RESET);
+// pPIOA->PIO_CODR = PIOA_LCD_RESET_MASK;
+ else
+ palSetPad(IOPORT1, PIOA_LCD_RESET);
+// pPIOA->PIO_SODR = PIOA_LCD_RESET_MASK;
+}
+
+/**
+ * @brief Set or clear the lcd back-light pin.
+ *
+ * @param[in] state TRUE = lcd back-light on, FALSE = lcd back-light off
+ *
+ * @notapi
+ */
+static __inline void GDISP_LLD(setpin_backlight)(bool_t state) {
+ if (state)
+ palSetPad(IOPORT2, PIOB_LCD_BL);
+// pPIOB->PIO_SODR = PIOB_LCD_BL_MASK;
+ else
+ palClearPad(IOPORT2, PIOB_LCD_BL);
+// pPIOB->PIO_CODR = PIOB_LCD_BL_MASK;
+}
+
+/**
+ * @brief Send a 9 bit command/data to the lcd.
+ *
+ * @param[in] data The data to send
+ *
+ * @notapi
+ */
+static __inline void GDISP_LLD(write_spi)(uint16_t data) {
+ // wait for the previous transfer to complete
+ while((pSPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0);
+ // send the data
+ pSPI->SPI_TDR = data;
+}
+
+#if GDISP_HARDWARE_READPIXEL || GDISP_HARDWARE_SCROLL || defined(__DOXYGEN__)
+/**
+ * @brief Read data from the lcd.
+ *
+ * @return The data from the lcd
+ *
+ * @notapi
+ */
+static __inline uint16_t GDISP_LLD(read_spi)(void) {
+ #error "gdispNokia6610: GDISP_HARDWARE_READPIXEL and GDISP_HARDWARE_SCROLL are not supported on this board"
+ return 0;
+}
+#endif
+
+#endif /* _GDISP_LLD_BOARD_H */
+/** @} */
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