diff options
Diffstat (limited to 'drivers/lcd/lcdd_hx8347.c')
| -rw-r--r-- | drivers/lcd/lcdd_hx8347.c | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/drivers/lcd/lcdd_hx8347.c b/drivers/lcd/lcdd_hx8347.c new file mode 100644 index 0000000..e5871ad --- /dev/null +++ b/drivers/lcd/lcdd_hx8347.c @@ -0,0 +1,147 @@ +/* ----------------------------------------------------------------------------
+ * ATMEL Microcontroller Software Support
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ----------------------------------------------------------------------------
+ */
+
+//------------------------------------------------------------------------------
+// Headers
+//------------------------------------------------------------------------------
+
+#include "lcdd.h"
+
+#include <board.h>
+#include <pmc/pmc.h>
+#include <hx8347/hx8347.h>
+#include <pio/pio.h>
+
+//------------------------------------------------------------------------------
+// Global functions
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+/// Initializes the LCD controller.
+/// SMC are configured @ 96MHz for LCD.
+/// \param pLcdBase LCD base address.
+//------------------------------------------------------------------------------
+void LCDD_Initialize(void)
+{
+ const Pin pPins[] = {BOARD_LCD_PINS};
+ AT91PS_HSMC4_CS pSMC = AT91C_BASE_HSMC4_CS2;
+ unsigned int rMode;
+
+ // Enable pins
+ PIO_Configure(pPins, PIO_LISTSIZE(pPins));
+
+ // Enable peripheral clock
+ PMC_EnablePeripheral(AT91C_ID_HSMC4);
+
+ // EBI SMC Configuration
+ pSMC->HSMC4_SETUP = 0
+ | ((1 << 0) & AT91C_HSMC4_NWE_SETUP)
+ | ((1 << 8) & AT91C_HSMC4_NCS_WR_SETUP)
+ | ((9 << 16) & AT91C_HSMC4_NRD_SETUP)
+ | ((9 << 24) & AT91C_HSMC4_NCS_RD_SETUP)
+ ;
+
+ pSMC->HSMC4_PULSE = 0
+ | (( 4 << 0) & AT91C_HSMC4_NWE_PULSE)
+ | (( 4 << 8) & AT91C_HSMC4_NCS_WR_PULSE)
+ | (( 36 << 16) & AT91C_HSMC4_NRD_PULSE)
+ | (( 36 << 24) & AT91C_HSMC4_NCS_RD_PULSE)
+ ;
+
+ pSMC->HSMC4_CYCLE = 0
+ | ((10 << 0) & AT91C_HSMC4_NWE_CYCLE)
+ | ((45 << 16) & AT91C_HSMC4_NRD_CYCLE)
+ ;
+
+ rMode = pSMC->HSMC4_MODE & ~(AT91C_HSMC4_DBW | AT91C_HSMC4_READ_MODE | AT91C_HSMC4_WRITE_MODE);
+ pSMC->HSMC4_MODE = rMode
+ | (AT91C_HSMC4_READ_MODE)
+ | (AT91C_HSMC4_WRITE_MODE)
+ | (AT91C_HSMC4_DBW_WIDTH_SIXTEEN_BITS)
+ ;
+
+ // Initialize LCD controller (HX8347)
+ LCD_Initialize((void *)BOARD_LCD_BASE);
+
+ // Set LCD backlight
+ LCDD_SetBacklight(25);
+}
+
+//------------------------------------------------------------------------------
+/// Turn on the LCD
+//------------------------------------------------------------------------------
+void LCDD_Start(void)
+{
+ LCD_On((void *)BOARD_LCD_BASE);
+}
+
+//------------------------------------------------------------------------------
+/// Turn off the LCD
+//------------------------------------------------------------------------------
+void LCDD_Stop(void)
+{
+ LCD_Off((void *)BOARD_LCD_BASE);
+}
+
+//------------------------------------------------------------------------------
+/// Set the backlight of the LCD.
+/// \param level Backlight brightness level [1..32], 32 is maximum level.
+//------------------------------------------------------------------------------
+void LCDD_SetBacklight (unsigned int level)
+{
+ unsigned int i;
+ const Pin pPins[] = {BOARD_BACKLIGHT_PIN};
+
+ // Enable pins
+ PIO_Configure(pPins, PIO_LISTSIZE(pPins));
+
+ // Switch off backlight
+ PIO_Clear(pPins);
+ i = 600 * (BOARD_MCK / 1000000); // wait for at least 500us
+ while(i--);
+
+ // Set new backlight level
+ for (i = 0; i < level; i++) {
+
+
+ PIO_Clear(pPins);
+ PIO_Clear(pPins);
+ PIO_Clear(pPins);
+
+
+ PIO_Set(pPins);
+ PIO_Set(pPins);
+ PIO_Set(pPins);
+
+// PIO_Clear(pPins);
+// PIO_Clear(pPins);
+// PIO_Clear(pPins);
+ }
+// PIO_Set(pPins);
+}
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