148 lines
4.0 KiB
C
148 lines
4.0 KiB
C
// Copyright 2021 IOsetting <iosetting(at)outlook.com>
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// 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,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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/***
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* Demo: ST7567 12864 LCD
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* Board: STC8H3K32
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*
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* P37 -> RES, RESET 7 - 18
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* P36 -> DC, A0 8 - 17
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* P35 -> CSB, Chip Select 6 - 16
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* P32 -> SCK, SCL, CLK, Clock 9 - 13
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* P12 -> LED-A, Backlight 3 - 19
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* P34 -> MOSI, SDA 10 - 15
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* GND -> GND
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* 3.3V -> VCC
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*/
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#include "fw_hal.h"
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#include "st7567.h"
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void SPI_Init(void)
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{
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// ST7567 doesn't work if SPI frequency is too high
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SPI_SetClockPrescaler(SPI_ClockPreScaler_16);
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// Clock is low when idle
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SPI_SetClockPolarity(HAL_State_OFF);
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// Data transfer is driven by lower SS pin
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SPI_SetClockPhase(SPI_ClockPhase_LeadingEdge);
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// MSB first
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SPI_SetDataOrder(SPI_DataOrder_MSB);
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// Define the output pins
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SPI_SetPort(SPI_AlterPort_P35_P34_P33_P32);
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// Ignore SS pin, use MSTR to swith between master/slave mode
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SPI_IgnoreSlaveSelect(HAL_State_ON);
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// Master mode
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SPI_SetMasterMode(HAL_State_ON);
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// Start SPI
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SPI_SetEnabled(HAL_State_ON);
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}
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void GPIO_Init(void)
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{
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// Configure GPIO pins before SPI and device
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// DIN(P34)
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GPIO_P3_SetMode(GPIO_Pin_4, GPIO_Mode_InOut_QBD);
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// SCLK(P32)
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GPIO_P3_SetMode(GPIO_Pin_2|GPIO_Pin_5|GPIO_Pin_6|GPIO_Pin_7, GPIO_Mode_Output_PP);
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GPIO_P1_SetMode(GPIO_Pin_2, GPIO_Mode_Output_PP);
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}
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int main(void)
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{
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int y1, y2;
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uint8_t d1, d2;
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SYS_SetClock();
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GPIO_Init();
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SPI_Init();
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ST7567_Init();
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while(1)
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{
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ST7567_DrawLine(0, 0, 127, 0, 1);
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ST7567_DrawLine(0, 0, 0, 63, 1);
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ST7567_DrawLine(127, 0, 127, 63, 1);
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ST7567_DrawLine(0, 63, 127, 63, 1);
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ST7567_GotoXY(3, 5);
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ST7567_Puts("LCD:ST7567", &Font_5x7, 1);
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ST7567_GotoXY(3, 13);
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ST7567_Puts("STC8 FwLib Demo", &Font_5x7, 1);
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ST7567_GotoXY(3, 21);
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ST7567_Puts("It's a demo of ST7567 12864 LCD", &Font_3x5, 1);
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ST7567_GotoXY(3, 27);
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ST7567_Puts("Font size 3x5, nums:01234567890", &Font_3x5, 1);
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ST7567_GotoXY(5, 52);
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ST7567_Puts("Font size: 5x7", &Font_5x7, 1);
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ST7567_UpdateScreen();
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SYS_Delay(2000);
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y1 = 10;
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while (y1 <= 0x30)
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{
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ST7567_SetContrast(y1++);
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SYS_Delay(100);
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}
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while (y1 >= 10)
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{
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ST7567_SetContrast(y1--);
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SYS_Delay(100);
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}
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while (y1 <= 0x20)
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{
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ST7567_SetContrast(y1++);
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SYS_Delay(100);
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}
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SYS_Delay(2000);
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ST7567_ToggleInvert();
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ST7567_UpdateScreen();
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SYS_Delay(2000);
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ST7567_ToggleInvert();
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ST7567_UpdateScreen();
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SYS_Delay(2000);
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ST7567_Fill(0);
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y1 = 64, y2 = 0;
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while (y1 > 0)
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{
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ST7567_DrawLine(0, y1, 127, y2, 1);
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ST7567_UpdateScreen();
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y1 -= 2;
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y2 += 2;
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SYS_Delay(100);
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}
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SYS_Delay(1000);
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ST7567_Fill(0);
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y1 = 127, y2 = 0;
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while (y1 > 0)
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{
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ST7567_DrawLine(y1, 0, y2, 63, 1);
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ST7567_UpdateScreen();
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y1 -= 2;
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y2 += 2;
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SYS_Delay(100);
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}
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SYS_Delay(1000);
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ST7567_Fill(0);
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ST7567_UpdateScreen();
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SYS_Delay(2000);
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}
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}
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