Support for Sharp Memory LCD. From Librae

2026-05-21 13:13:08 +08:00 · 2013-12-23 16:03:54 -06:00
parent 1c61bb0c53
commit 45d2bf2554
5 changed files with 970 additions and 1 deletions
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+/*******************************************************************************
+ * include/nuttx/lcd/memlcd.h
+ * Common definitions for the Sharp Memory LCD driver
+ *
+ *   Copyright (C) 2010 Gregory Nutt. All rights reserved.
+ *   Author: Gregory Nutt <gnutt@nuttx.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ * 3. Neither the name NuttX nor the names of its contributors may be
+ *    used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS 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.
+ *
+ ******************************************************************************/
+
+#ifndef __INCLUDE_NUTTX_MEMLCD_H
+#define __INCLUDE_NUTTX_MEMLCD_H
+
+/*******************************************************************************
+ * Included Files
+ ******************************************************************************/
+
+#include <stdbool.h>
+
+#ifdef __cplusplus
+#  define EXTERN extern "C"
+extern "C"
+{
+#else
+#  define EXTERN extern
+#endif
+
+/*******************************************************************************
+ * Pre-processor Definitions
+ ******************************************************************************/
+
+/*******************************************************************************
+ * Public Types
+ ******************************************************************************/
+
+/* A reference to a structure of this type must be passed to the initialization
+ * method. It provides some board-specific hooks used by driver to manage the
+ * timer and gpio (IRQ and DISP).
+ *
+ * Memory for this structure is provided by the caller.  It is not copied
+ * by the driver and is presumed to persist while the driver is active.
+ */
+
+struct memlcd_priv_s
+{
+  /* IRQ/GPIO access callbacks.  These operations all hidden behind
+   * callbacks to isolate the Memory LCD driver from differences in GPIO
+   * interrupt handling by varying boards and MCUs.
+   *
+   * irqattach   - Attach the driver interrupt handler to the GPIO interrupt
+   *               If isr is NULL, detach and disable it.
+   * dispcontrol - Enable or disable the DISP pin and EXTCOMIN interrupt.
+   * setpolarity - Board specified method to set EXTCOMIN.
+   *               Needed only when CONFIG_MEMLCD_EXTCOMIN_MODE_HW is not set.
+   * setvcomfreq - Set timer frequency for EXTCOMIN.
+   */
+
+  int (*attachirq) (xcpt_t isr);
+  void (*dispcontrol) (bool on);
+#ifndef CONFIG_MEMLCD_EXTCOMIN_MODE_HW
+  void (*setpolarity) (bool pol);
+#endif
+  void (*setvcomfreq) (unsigned int freq);
+};
+
+/*******************************************************************************
+ * Public Data
+ ******************************************************************************/
+
+/*******************************************************************************
+ * Public Function Prototypes
+ ******************************************************************************/
+
+/*******************************************************************************
+ * Name:  memlcd_initialize
+ *
+ * Description:
+ *
+ * Input Parameters:
+ *
+ *   spi - A reference to the SPI driver instance.
+ *   devno - A value in the range of 0 throuh CONFIG_MEMLCD_NINTERFACES-1.
+ *   This allows support for multiple devices.
+ *   memlcd_priv_s - Board specific structure
+ *
+ * Returned Value:
+ *
+ *   On success, this function returns a reference to the LCD object for the
+ *   specified LCD.  NULL is returned on any failure.
+ *
+ ******************************************************************************/
+
+struct lcd_dev_s;               /* see nuttx/lcd.h */
+struct spi_dev_s;               /* see nuttx/spi/spi.h */
+FAR struct lcd_dev_s *memlcd_initialize(FAR struct spi_dev_s *spi,
+                                        FAR struct memlcd_priv_s *priv,
+                                        unsigned int devno);
+
+#undef EXTERN
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* __INCLUDE_NUTTX_MEMLCD_H */