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
13 #define ST7565_LCD_BIAS ST7565_LCD_BIAS_9 // actually 6
14 #define ST7565_ADC ST7565_ADC_NORMAL
15 #define ST7565_COM_SCAN ST7565_COM_SCAN_DEC
16 #define ST7565_PAGE_ORDER 0,1,2,3
18 * Custom page order for several LCD boards, e.g. HEM12864-99
19 * #define ST7565_PAGE_ORDER 4,5,6,7,0,1,2,3
22 #define ST7565_GPIOPORT GPIOC
23 #define ST7565_PORT PORTC
24 #define ST7565_A0_PIN 7
25 #define ST7565_RST_PIN 8
26 #define ST7565_MOSI_PIN 6
27 #define ST7565_SLCK_PIN 5
28 #define ST7565_SS_PIN 4
30 #define palSetPadModeRaw(portname, bits) \
31 ST7565_PORT->PCR[ST7565_##portname##_PIN] = bits
33 #define palSetPadModeNamed(portname, portmode) \
34 palSetPadMode(ST7565_GPIOPORT, ST7565_##portname##_PIN, portmode)
36 #define ST7565_SPI_MODE PORTx_PCRn_DSE | PORTx_PCRn_MUX(2)
37 // DSPI Clock and Transfer Attributes
41 static const SPIConfig spi1config = {
43 /* HW dependent part.*/
55 static bool_t st7565_is_data_mode = 1;
57 static GFXINLINE void init_board(GDisplay *g) {
59 palSetPadModeNamed(A0, PAL_MODE_OUTPUT_PUSHPULL);
60 palSetPad(ST7565_GPIOPORT, ST7565_A0_PIN);
61 st7565_is_data_mode = 1;
62 palSetPadModeNamed(RST, PAL_MODE_OUTPUT_PUSHPULL);
63 palSetPad(ST7565_GPIOPORT, ST7565_RST_PIN);
64 palSetPadModeRaw(MOSI, ST7565_SPI_MODE);
65 palSetPadModeRaw(SLCK, ST7565_SPI_MODE);
66 palSetPadModeRaw(SS, ST7565_SPI_MODE);
69 spiStart(&SPID1, &spi1config);
73 static GFXINLINE void post_init_board(GDisplay *g) {
77 static GFXINLINE void setpin_reset(GDisplay *g, bool_t state) {
80 palClearPad(ST7565_GPIOPORT, ST7565_RST_PIN);
83 palSetPad(ST7565_GPIOPORT, ST7565_RST_PIN);
87 static GFXINLINE void acquire_bus(GDisplay *g) {
89 // Only the LCD is using the SPI bus, so no need to acquire
90 // spiAcquireBus(&SPID1);
93 static GFXINLINE void release_bus(GDisplay *g) {
95 // Only the LCD is using the SPI bus, so no need to release
96 //spiReleaseBus(&SPID1);
99 static GFXINLINE void write_cmd(GDisplay *g, uint8_t cmd) {
101 if (st7565_is_data_mode) {
102 // The sleeps need to be at lest 10 vs 25 ns respectively
103 // So let's sleep two ticks, one tick might not be enough
104 // if we are at the end of the tick
106 palClearPad(ST7565_GPIOPORT, ST7565_A0_PIN);
108 st7565_is_data_mode = 0;
110 spiSend(&SPID1, 1, &cmd);
113 static GFXINLINE void write_data(GDisplay *g, uint8_t* data, uint16_t length) {
115 if (!st7565_is_data_mode) {
116 // The sleeps need to be at lest 10 vs 25 ns respectively
117 // So let's sleep two ticks, one tick might not be enough
118 // if we are at the end of the tick
120 palSetPad(ST7565_GPIOPORT, ST7565_A0_PIN);
122 st7565_is_data_mode = 1;
124 spiSend(&SPID1, length, data);
127 #endif /* _GDISP_LLD_BOARD_H */