lcd: Add support to Holtek HT16K33 as 14-segment display controller
This commit is contained in:
Alan C. Assis
Xiang Xiao
parent
68f19a6290
commit
54134507ff
@ -1451,6 +1451,36 @@ config LCD_ST7032
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connected to a pull-up resistor and the pin SHLC is connected to
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connected to a pull-up resistor and the pin SHLC is connected to
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the ground. So only I2C pins SDA and SCL are used by NuttX.
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the ground. So only I2C pins SDA and SCL are used by NuttX.
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config LCD_HT16K33
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bool "Holtek HT16K32 4 Digits 14-Segment Display"
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default n
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depends on I2C
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---help---
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Enable support for Holtek HT16K33 (and Vinka VK16K33) 4 Digits
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14-Segment module: 0.54" 14-segment LED HT16K32 Backpack.
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if LCD_HT16K33
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config LCD_HT16K33_MULT_MODULE
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bool "Enable support to multiple modules as a single display"
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default n
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depends on I2C
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---help---
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It is possible to connect many HT16K33 modules with sequencial
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I2C addresses to work as a single display to support lenght
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text strings. The device at the I2C address 0x70 will display the
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4 more significant characters, the device 0x71 will display the
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previous 4 more significant characters and so on.
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config LCD_HT16K33_NUMBER_MODULES
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int "Quantity of HT16K33 modules to be used as a single display"
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range 1 8
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depends on LCD_HT16K33_MULT_MODULE
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---help---
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Quantity of sequential modules to be used to create a single
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display. We can have up to 8 to I2C Addresses: 0x70 - 0x77.
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endif # LCD_HT16K33
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endif # SLCD
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endif # SLCD
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comment "Other LCD-related Devices"
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comment "Other LCD-related Devices"
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@ -146,6 +146,10 @@ endif
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ifeq ($(CONFIG_LCD_ST7032),y)
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ifeq ($(CONFIG_LCD_ST7032),y)
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CSRCS += st7032.c
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CSRCS += st7032.c
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endif
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endif
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ifeq ($(CONFIG_LCD_HT16K33),y)
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CSRCS += ht16k33_14seg.c
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endif
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endif # CONFIG_SLCD
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endif # CONFIG_SLCD
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# Other LCD-related devices
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# Other LCD-related devices
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1153
drivers/lcd/ht16k33_14seg.c
Normal file
1153
drivers/lcd/ht16k33_14seg.c
Normal file
File diff suppressed because it is too large
Load Diff
221
include/nuttx/lcd/ht16k33.h
Normal file
221
include/nuttx/lcd/ht16k33.h
Normal file
@ -0,0 +1,221 @@
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/****************************************************************************
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* include/nuttx/lcd/ht16k33.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_LEDS_HT16K33_H
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#define __INCLUDE_NUTTX_LEDS_HT16K33_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <nuttx/fs/ioctl.h>
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/* Configuration
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* CONFIG_I2C - Enables support for SPI drivers
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* CONFIG_LCD_HT16K33 - Enables support for the HT16K33 driver
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*/
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#if defined(CONFIG_I2C) && defined(CONFIG_LCD_HT16K33)
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* HT16K33 Address */
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#define HT16K33_I2C_ADDR 0x70
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/* Default contrast */
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#define DEFAULT_CONTRAST 0xf
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#define HT16K33_CONTRAST_MIN 0
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#define HT16K33_CONTRAST_MAX 15
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/* HT16K33 register addresses */
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#define HT16K33_DISP_DATA_ADDR 0x00 /* Display Data Address Pointer: 0x00-0x0f */
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#define HT16K33_SYSTEM_SETUP 0x20 /* System Setup: bit 0 = System Oscilator */
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#define HT16K33_KEY_DATA_ADDR 0x40 /* Key Data Address Pointer: 0x00-0x07 */
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#define HT16K33_INT_FLAG_ADDR 0x60 /* INT Flag Address */
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#define HT16K33_DISPLAY_SETUP 0x80 /* DISPLAY Setup */
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#define HT16K33_ROW_INT_SET 0xa0 /* ROW/INT set */
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#define HT16K33_DIMMING_SET 0xe0 /* Dimming set */
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#define HT16K33_TEST_MODE 0xd9 /* Holtek Test Mode */
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/* Bits and flags definitions */
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#define SYSTEM_SETUP_OSC_ON (1 << 0) /* Turn ON the Oscillator */
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#define DISPLAY_SETUP_DISP_ON (1 << 0) /* Display ON */
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#define DISPLAY_SETUP_BLINK_SHIFT 1
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#define DISPLAY_SETUP_BLINK_MASK (3 << DISPLAY_SETUP_BLINK_SHIFT)
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# define DISPLAY_SETUP_BLINK_OFF (0 << DISPLAY_SETUP_BLINK_SHIFT)
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# define DISPLAY_SETUP_BLINK_2HZ (1 << DISPLAY_SETUP_BLINK_SHIFT)
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# define DISPLAY_SETUP_BLINK_1HZ (2 << DISPLAY_SETUP_BLINK_SHIFT)
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# define DISPLAY_SETUP_BLINK_0P5HZ (3 << DISPLAY_SETUP_BLINK_SHIFT)
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#define DIMMING_SHIFT 0
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#define DIMMING_MASK (0xf << DIMMING_SHIFT)
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#define DIMMING_DUTY(N) ((N - 1) << DIMMING_SHIFT)
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/* This 14-segment mapping comes from Dave Madison's LED-Segment-ASCII
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* released under MIT license:
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* https://github.com/dmadison/LED-Segment-ASCII
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*/
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static const uint16_t asciito14seg[96] =
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{
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0x0000, /* (space) */
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0x4006, /* ! */
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0x0202, /* " */
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0x12ce, /* # */
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0x12ed, /* $ */
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0x3fe4, /* % */
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0x2359, /* & */
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0x0200, /* ' */
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0x2400, /* ( */
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0x0900, /* ) */
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0x3fc0, /* * */
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0x12c0, /* + */
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0x0800, /* , */
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0x00c0, /* - */
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0x4000, /* . */
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0x0c00, /* / */
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0x0c3f, /* 0 */
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0x0406, /* 1 */
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0x00db, /* 2 */
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0x008f, /* 3 */
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0x00e6, /* 4 */
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0x2069, /* 5 */
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0x00fd, /* 6 */
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0x0007, /* 7 */
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0x00ff, /* 8 */
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0x00ef, /* 9 */
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0x1200, /* : */
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0x0a00, /* ; */
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0x2440, /* < */
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0x00c8, /* = */
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0x0980, /* > */
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0x5083, /* ? */
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0x02bb, /* @ */
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0x00f7, /* A */
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0x128f, /* B */
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0x0039, /* C */
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0x120f, /* D */
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0x0079, /* E */
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0x0071, /* F */
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0x00bd, /* G */
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0x00f6, /* H */
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0x1209, /* I */
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0x001e, /* J */
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0x2470, /* K */
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0x0038, /* L */
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0x0536, /* M */
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0x2136, /* N */
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0x003f, /* O */
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0x00f3, /* P */
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0x203f, /* Q */
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0x20f3, /* R */
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0x00ed, /* S */
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0x1201, /* T */
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0x003e, /* U */
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0x0c30, /* V */
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0x2836, /* W */
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0x2d00, /* X */
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0x00ee, /* Y */
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0x0c09, /* Z */
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0x0039, /* [ */
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0x2100, /* \ */
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0x000f, /* ] */
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0x2800, /* ^ */
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0x0008, /* _ */
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0x0100, /* ` */
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0x1058, /* a */
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0x2078, /* b */
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0x00d8, /* c */
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0x088e, /* d */
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0x0858, /* e */
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0x14c0, /* f */
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0x048e, /* g */
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0x1070, /* h */
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0x1000, /* i */
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0x0a10, /* j */
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0x3600, /* k */
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0x0030, /* l */
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0x10d4, /* m */
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0x1050, /* n */
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0x00dc, /* o */
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0x0170, /* p */
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0x0486, /* q */
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0x0050, /* r */
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0x2088, /* s */
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0x0078, /* t */
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0x001c, /* u */
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0x0810, /* v */
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0x2814, /* w */
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0x2d00, /* x */
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0x028e, /* y */
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0x0848, /* z */
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0x0949, /* { */
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0x1200, /* | */
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0x2489, /* } */
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0x0cc0, /* ~ */
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0x0000, /* (del) */
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};
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/****************************************************************************
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* Public Types
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Name: ht16k33_register
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*
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* Description:
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* Initialize the HT16K33 device as a LEDS interface.
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*
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* Input Parameters:
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* spi - An instance of the SPI interface to use to communicate
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* with the HT16K33.
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* devno - Device number to identify current display.
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*
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* Returned Value:
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* Zero (OK) on success; a negated errno value on failure.
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*
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****************************************************************************/
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struct i2c_master_s; /* Forward reference */
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int ht16k33_register(int devno, FAR struct i2c_master_s *i2c);
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* CONFIG_I2C && CONFIG_HT16K33 */
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#endif /* __INCLUDE_NUTTX_LEDS_HT16K33_H */
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