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Added ST7565 driver by user sam0737

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This commit is contained in:
Joel Bodenmann 2013-09-15 00:32:57 +02:00
parent 4394266679
commit bf3761e0f2
5 changed files with 428 additions and 0 deletions
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269
drivers/gdisp/ST7565/gdisp_lld.c Normal file
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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
#include "gfx.h"
#if GFX_USE_GDISP || defined(__DOXYGEN__)
/* Include the emulation code for things we don't support */
#include "gdisp/lld/emulation.c"
#include "st7565.h"
#include "gdisp_lld_board.h"
/*===========================================================================*/
/* Driver local definitions. */
/*===========================================================================*/
#ifndef GDISP_SCREEN_HEIGHT
#define GDISP_SCREEN_HEIGHT 64
#endif
#ifndef GDISP_SCREEN_WIDTH
#define GDISP_SCREEN_WIDTH 128
#endif
#define GDISP_INITIAL_CONTRAST 0xFF
/*===========================================================================*/
/* Driver local functions. */
/*===========================================================================*/
// Some common routines and macros
#define delay(us) gfxSleepMicroseconds(us)
#define delay_ms(ms) gfxSleepMilliseconds(ms)
// The memory buffer for the display
static uint8_t gdisp_buffer[GDISP_SCREEN_HEIGHT * GDISP_SCREEN_WIDTH / 8];
/** Set the display to normal or inverse.
* @param[in] value 0 for normal mode, or 1 for inverse mode.
* @notapi
*/
static void invert_display(uint8_t i) {
write_cmd(i ? ST7565_INVERT_DISPLAY : ST7565_POSITIVE_DISPLAY);
}
/** Turn the whole display off.
* Sends the display to sleep, but leaves RAM intact.
* @notapi
*/
static void display_off(void) {
write_cmd(ST7565_DISPLAY_OFF);
}
/** Turn the whole display on.
* Wakes up this display following a sleep() call.
* @notapi
*/
static void display_on(void) {
write_cmd(ST7565_DISPLAY_ON);
}
/** Set the display contrast.
* @param[in] value The contrast, from 1 to 63.
* @notapi
*/
static void set_contrast(uint8_t value) {
write_cmd(ST7565_CONTRAST);
write_cmd(value & 0x3F);
}
/** Set the display start line. This is the line at which the display will start rendering.
* @param[in] value A value from 0 to 63 denoting the line to start at.
* @notapi
*/
static void set_display_start_line(unsigned char value) {
write_cmd(ST7565_START_LINE | value);
}
static void gdisp_lld_display(void) {
uint8_t p;
set_display_start_line(0);
for (p = 0; p < 8; p++) {
write_cmd(ST7565_PAGE | p);
write_cmd(ST7565_COLUMN_MSB | 0);
write_cmd(ST7565_COLUMN_LSB | 0);
write_cmd(ST7565_RMW);
write_data(&gdisp_buffer[p * GDISP_SCREEN_WIDTH], GDISP_SCREEN_WIDTH);
}
}
/*===========================================================================*/
/* Driver interrupt handlers. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver exported functions. */
/*===========================================================================*/
/* ---- Required Routines ---- */
/*
The following 2 routines are required.
All other routines are optional.
*/
/**
* @brief Low level GDISP driver initialization.
*
* @notapi
*/
bool_t gdisp_lld_init(void) {
// Initialize your display
init_board();
// Hardware reset.
setpin_reset(TRUE);
delay_ms(10);
setpin_reset(FALSE);
delay_ms(1);
write_cmd(ST7565_LCD_BIAS_7);
write_cmd(ST7565_ADC_NORMAL);
write_cmd(ST7565_COM_SCAN_INC);
set_display_start_line(0);
set_contrast(32);
write_cmd(ST7565_RESISTOR_RATIO | 0x3);
// turn on voltage converter (VC=1, VR=0, VF=0)
write_cmd(ST7565_POWER_CONTROL | 0x04);
delay_ms(50);
// turn on voltage regulator (VC=1, VR=1, VF=0)
write_cmd(ST7565_POWER_CONTROL | 0x06);
delay_ms(50);
// turn on voltage follower (VC=1, VR=1, VF=1)
write_cmd(ST7565_POWER_CONTROL | 0x07);
delay_ms(50);
display_on();
write_cmd(ST7565_ALLON_NORMAL);
invert_display(0);// Disable Inversion of display.
write_cmd(ST7565_RMW);
gdisp_lld_display();
// Initialize the GDISP structure
GDISP.Width = GDISP_SCREEN_WIDTH;
GDISP.Height = GDISP_SCREEN_HEIGHT;
GDISP.Orientation = GDISP_ROTATE_0;
GDISP.Powermode = powerOn;
GDISP.Contrast = 50;
#if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
GDISP.clipx0 = 0;
GDISP.clipy0 = 0;
GDISP.clipx1 = GDISP.Width;
GDISP.clipy1 = GDISP.Height;
#endif
return TRUE;
}
/**
* @brief Draws a pixel on the display.
*
* @param[in] x X location of the pixel
* @param[in] y Y location of the pixel
* @param[in] color The color of the pixel
*
* @notapi
*/
void gdisp_lld_draw_pixel(coord_t x, coord_t y, color_t color) {
#if GDISP_NEED_VALIDATION || GDISP_NEED_CLIP
if (x < GDISP.clipx0 || y < GDISP.clipy0 || x >= GDISP.clipx1 || y >= GDISP.clipy1) return;
#endif
if (color == 1)
gdisp_buffer[x+ (y/8)*GDISP_SCREEN_WIDTH] |= (1<<y%8);
else
gdisp_buffer[x+ (y/8)*GDISP_SCREEN_WIDTH] &= ~(1<<y%8);
}
/* ---- Optional Routines ---- */
/*
All the below routines are optional.
Defining them will increase speed but everything
will work if they are not defined.
If you are not using a routine - turn it off using
the appropriate GDISP_HARDWARE_XXXX macro.
Don't bother coding for obvious similar routines if
there is no performance penalty as the emulation software
makes a good job of using similar routines.
eg. If gfillarea() is defined there is little
point in defining clear() unless the
performance bonus is significant.
For good performance it is suggested to implement
fillarea() and blitarea().
*/
#if (GDISP_NEED_CONTROL && GDISP_HARDWARE_CONTROL) || defined(__DOXYGEN__)
/**
* @brief Driver Control
* @details Unsupported control codes are ignored.
* @note The value parameter should always be typecast to (void *).
* @note There are some predefined and some specific to the low level driver.
* @note GDISP_CONTROL_POWER - Takes a gdisp_powermode_t
* GDISP_CONTROL_ORIENTATION - Takes a gdisp_orientation_t
* GDISP_CONTROL_BACKLIGHT - Takes an int from 0 to 100. For a driver
* that only supports off/on anything other
* than zero is on.
* GDISP_CONTROL_CONTRAST - Takes an int from 0 to 100.
* GDISP_CONTROL_LLD - Low level driver control constants start at
* this value.
*
* @param[in] what What to do.
* @param[in] value The value to use (always cast to a void *).
*
* @notapi
*/
void gdisp_lld_control(unsigned what, void *value) {
switch(what) {
case GDISP_CONTROL_POWER:
if (GDISP.Powermode == (gdisp_powermode_t)value)
return;
switch((gdisp_powermode_t)value) {
case powerOff:
display_off();
break;
case powerSleep:
display_off();
break;
case powerDeepSleep:
display_off();
break;
case powerOn:
display_on();
break;
default:
return;
}
GDISP.Powermode = (gdisp_powermode_t)value;
return;
case GDISP_CONTROL_BACKLIGHT:
set_backlight((uint8_t)(size_t)value);
return;
case GDISP_CONTROL_CONTRAST:
if ((unsigned)value > 100) value = (void*)100;
if (GDISP.Contrast == (uint8_t)((float)((size_t)value) * 63.0/100.0))
return;
set_contrast((uint8_t)((float)((size_t)value) * 63.0/100.0) );
GDISP.Contrast = (unsigned)value;
return;
case GDISP_CONTROL_LLD_FLUSH:
gdisp_lld_display();
return;
}
}
#endif // GDISP_NEED_CONTROL
#endif // GFX_USE_GDISP
/** @} */

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drivers/gdisp/ST7565/gdisp_lld.mk Normal file
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# List the required driver.
GFXSRC += $(GFXLIB)/drivers/gdisp/ST7565/gdisp_lld.c
# Required include directories
GFXINC += $(GFXLIB)/drivers/gdisp/ST7565

82
drivers/gdisp/ST7565/gdisp_lld_board_template.h Normal file
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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
#ifndef _GDISP_LLD_BOARD_H
#define _GDISP_LLD_BOARD_H
/**
* @brief Initialize the board for the display.
* @notes This board definition uses GPIO and assumes exclusive access to these GPIO pins
* @notapi
*/
static inline void init_board(void) {
/* Configure SPI bus here. Up to 10Mhz, SPI Mode = 3 (CPOL = 1, CPHA = 0) */
/* Configure A0, !CS, !RST pin for output */
}
/**
* @brief Set or clear the lcd reset pin.
* @param[in] state TRUE = lcd in reset, FALSE = normal operation
* @notapi
*/
static inline void setpin_reset(bool_t state) {
/* Set !CS to low */
if (state) {
/* Set !RST to low */
} else {
/* Set !RST to high */
}
}
/**
* @brief Set the lcd back-light level.
* @param[in] percent 0 to 100%
* @notapi
*/
static inline void set_backlight(uint8_t percent) {
}
/**
* @brief Take exclusive control of the bus
* @notapi
*/
static inline void acquire_bus(void) {
}
/**
* @brief Release exclusive control of the bus
* @notapi
*/
static inline void release_bus(void) {
}
/**
* @brief Send command to the display.
* @param[in] cmd The command to send
* @notapi
*/
static inline void write_cmd(uint8_t cmd) {
/* Set A0 to low */
/* Transmit cmd over SPI */
}
/**
* @brief Send data to the display.
* @param[in] data The data to send
* @notapi
*/
static inline void write_data(uint8_t* data, uint16_t length) {
/* Set A0 to high */
/* Transmit data for length over SPI. DMA is recommended. */
}
#endif /* _GDISP_LLD_BOARD_H */
/** @} */

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drivers/gdisp/ST7565/gdisp_lld_config.h Normal file
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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
#ifndef _GDISP_LLD_CONFIG_H
#define _GDISP_LLD_CONFIG_H
#if GFX_USE_GDISP
/*===========================================================================*/
/* Driver hardware support. */
/*===========================================================================*/
#define GDISP_DRIVER_NAME "ST7565"
#define GDISP_HARDWARE_CONTROL TRUE
#define GDISP_PIXELFORMAT GDISP_PIXELFORMAT_MONO
#define GDISP_CONTROL_LLD_FLUSH (GDISP_CONTROL_LLD + 1)
#endif /* GFX_USE_GDISP */
#endif /* _GDISP_LLD_CONFIG_H */
/** @} */

42
drivers/gdisp/ST7565/st7565.h Normal file
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/*
* This file is subject to the terms of the GFX License. If a copy of
* the license was not distributed with this file, you can obtain one at:
*
* http://ugfx.org/license.html
*/
#ifndef _ST7565_H
#define _ST7565_H
#define ST7565_BLACK 0
#define ST7565_WHITE 1
#define ST7565_CONTRAST 0x81
#define ST7565_ALLON_NORMAL 0xA4
#define ST7565_ALLON 0xA5
#define ST7565_POSITIVE_DISPLAY 0xA6
#define ST7565_INVERT_DISPLAY 0xA7
#define ST7565_DISPLAY_OFF 0xAE
#define ST7565_DISPLAY_ON 0xAF
#define ST7565_LCD_BIAS_7 0xA3
#define ST7565_LCD_BIAS_9 0xA2
#define ST7565_ADC_NORMAL 0xA0
#define ST7565_ADC_REVERSE 0xA1
#define ST7565_COM_SCAN_INC 0xC0
#define ST7565_COM_SCAN_DEC 0xC8
#define ST7565_START_LINE 0x40
#define ST7565_PAGE 0xB0
#define ST7565_COLUMN_MSB 0x10
#define ST7565_COLUMN_LSB 0x00
#define ST7565_RMW 0xE0
#define ST7565_RESISTOR_RATIO 0x20
#define ST7565_POWER_CONTROL 0x28
#endif /* _ST7565_H */
/** @} */