1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
|
/****************************************************************************
* config/stm32f4discovery/src/stm32_ug2864hsweg01.c
*
* Copyright (C) 2012 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <debug.h>
#include <nuttx/board.h>
#include <nuttx/spi/spi.h>
#include <nuttx/lcd/lcd.h>
#include <nuttx/lcd/ssd1306.h>
#include "stm32_gpio.h"
#include "stm32f4discovery.h"
#ifdef CONFIG_LCD_UG2864HSWEG01
/****************************************************************************
* Pre-Processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
/* The pin configurations here require that SPI1 is selected */
#ifndef CONFIG_STM32_SPI1
# error "The OLED driver requires CONFIG_STM32_SPI1 in the configuration"
#endif
#ifndef CONFIG_SPI_CMDDATA
# error "The OLED driver requires CONFIG_SPI_CMDDATA in the configuration"
#endif
/* Pin Configuration ********************************************************/
/* UG-2864HSWEG01 OLED Display (SPI 4-wire):
*
* --------------------------+----------------------------------------------
* Connector CON10 J1: | STM32F4Discovery
* --------------+-----------+----------------------------------------------
* CON10 J1: | CON20 J2: | P1/P2:
* --------------+-----------+----------------------------------------------
* 1 3v3 | 3,4 3v3 | P2 3V
* 3 /RESET | 8 /RESET | P2 PB6 (Arbitrary selection)
* 5 /CS | 7 /CS | P2 PB7 (Arbitrary selection)(2)
* 7 D/C | 9 D/C | P2 PB8 (Arbitrary selection)(2)
* 9 LED+ (N/C) | ----- | -----
* 2 5V Vcc | 1,2 Vcc | P2 5V
* 4 DI | 18 D1/SI | P1 PA7 (GPIO_SPI1_MOSI == GPIO_SPI1_MOSI_1 (1))
* 6 SCLK | 19 D0/SCL | P1 PA5 (GPIO_SPI1_SCK == GPIO_SPI1_SCK_1 (2))
* 8 LED- (N/C) | ----- | ------
* 10 GND | 20 GND | P2 GND
* --------------+-----------+----------------------------------------------
* (1) Required because of on-board MEMS
* (2) Note that the OLED CS and D/C are managed in the stm32_spi.c file.
* -------------------------------------------------------------------------
*/
/* Definitions in stm32f4discovery.h */
/* Debug ********************************************************************/
#ifdef CONFIG_DEBUG_LCD
# define lcddbg(format, ...) dbg(format, ##__VA_ARGS__)
# define lcdvdbg(format, ...) vdbg(format, ##__VA_ARGS__)
#else
# define lcddbg(x...)
# define lcdvdbg(x...)
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_graphics_setup
*
* Description:
* Called by NX initialization logic to configure the OLED.
*
****************************************************************************/
FAR struct lcd_dev_s *board_graphics_setup(unsigned int devno)
{
FAR struct spi_dev_s *spi;
FAR struct lcd_dev_s *dev;
/* Configure the OLED GPIOs. This initial configuration is RESET low,
* putting the OLED into reset state.
*/
(void)stm32_configgpio(GPIO_OLED_RESET);
/* Wait a bit then release the OLED from the reset state */
up_mdelay(20);
stm32_gpiowrite(GPIO_OLED_RESET, true);
/* Get the SPI1 port interface */
spi = up_spiinitialize(1);
if (!spi)
{
lcddbg("Failed to initialize SPI port 1\n");
}
else
{
/* Bind the SPI port to the OLED */
dev = ssd1306_initialize(spi, devno);
if (!dev)
{
lcddbg("Failed to bind SPI port 1 to OLED %d: %d\n", devno);
}
else
{
lcdvdbg("Bound SPI port 1 to OLED %d\n", devno);
/* And turn the OLED on */
(void)dev->setpower(dev, CONFIG_LCD_MAXPOWER);
return dev;
}
}
return NULL;
}
#endif /* CONFIG_LCD_UG2864AMBAG01 */
|
