2 * This file is subject to the terms of the GFX License. If a copy of
3 * the license was not distributed with this file, you can obtain one at:
5 * http://ugfx.org/license.html
8 #ifndef _GDISP_LLD_BOARD_H
9 #define _GDISP_LLD_BOARD_H
11 #define ST7565_LCD_BIAS ST7565_LCD_BIAS_9 // actually 6
12 #define ST7565_ADC ST7565_ADC_NORMAL
13 #define ST7565_COM_SCAN ST7565_COM_SCAN_DEC
14 #define ST7565_PAGE_ORDER 0,1,2,3
16 * Custom page order for several LCD boards, e.g. HEM12864-99
17 * #define ST7565_PAGE_ORDER 4,5,6,7,0,1,2,3
20 #define ST7565_GPIOPORT GPIOC
21 #define ST7565_PORT PORTC
22 #define ST7565_A0_PIN 7
23 #define ST7565_RST_PIN 8
24 #define ST7565_MOSI_PIN 6
25 #define ST7565_SLCK_PIN 5
26 #define ST7565_SS_PIN 4
28 #define palSetPadModeRaw(portname, bits) \
29 ST7565_PORT->PCR[ST7565_##portname##_PIN] = bits
31 #define palSetPadModeNamed(portname, portmode) \
32 palSetPadMode(ST7565_GPIOPORT, ST7565_##portname##_PIN, portmode)
34 #define ST7565_SPI_MODE PORTx_PCRn_DSE | PORTx_PCRn_MUX(2)
35 // DSPI Clock and Transfer Attributes
39 static const SPIConfig spi1config = {
41 /* HW dependent part.*/
53 static bool_t st7565_is_data_mode = 1;
55 static GFXINLINE void init_board(GDisplay *g) {
57 palSetPadModeNamed(A0, PAL_MODE_OUTPUT_PUSHPULL);
58 palSetPad(ST7565_GPIOPORT, ST7565_A0_PIN);
59 st7565_is_data_mode = 1;
60 palSetPadModeNamed(RST, PAL_MODE_OUTPUT_PUSHPULL);
61 palSetPad(ST7565_GPIOPORT, ST7565_RST_PIN);
62 palSetPadModeRaw(MOSI, ST7565_SPI_MODE);
63 palSetPadModeRaw(SLCK, ST7565_SPI_MODE);
64 palSetPadModeRaw(SS, ST7565_SPI_MODE);
67 spiStart(&SPID1, &spi1config);
71 static GFXINLINE void post_init_board(GDisplay *g) {
75 static GFXINLINE void setpin_reset(GDisplay *g, bool_t state) {
78 palClearPad(ST7565_GPIOPORT, ST7565_RST_PIN);
81 palSetPad(ST7565_GPIOPORT, ST7565_RST_PIN);
85 static GFXINLINE void acquire_bus(GDisplay *g) {
87 // Only the LCD is using the SPI bus, so no need to acquire
88 // spiAcquireBus(&SPID1);
91 static GFXINLINE void release_bus(GDisplay *g) {
93 // Only the LCD is using the SPI bus, so no need to release
94 //spiReleaseBus(&SPID1);
97 static GFXINLINE void write_cmd(GDisplay *g, uint8_t cmd) {
99 if (st7565_is_data_mode) {
100 // The sleeps need to be at lest 10 vs 25 ns respectively
101 // So let's sleep two ticks, one tick might not be enough
102 // if we are at the end of the tick
104 palClearPad(ST7565_GPIOPORT, ST7565_A0_PIN);
106 st7565_is_data_mode = 0;
108 spiSend(&SPID1, 1, &cmd);
111 static GFXINLINE void write_data(GDisplay *g, uint8_t* data, uint16_t length) {
113 if (!st7565_is_data_mode) {
114 // The sleeps need to be at lest 10 vs 25 ns respectively
115 // So let's sleep two ticks, one tick might not be enough
116 // if we are at the end of the tick
118 palSetPad(ST7565_GPIOPORT, ST7565_A0_PIN);
120 st7565_is_data_mode = 1;
122 spiSend(&SPID1, length, data);
125 #endif /* _GDISP_LLD_BOARD_H */