102 lines
2.4 KiB
C
102 lines
2.4 KiB
C
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// 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: SSD1306 12864 OLED
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* Board: STC8H3K32
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*
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* P32 -> SCL
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* P33 -> SDA
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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 "ssd1306.h"
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void I2C_Init(void)
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{
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// Master mode
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I2C_SetWorkMode(I2C_WorkMode_Master);
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/**
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* I2C clock = SYSCLK / 2 / (__prescaler__ * 2 + 4)
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* SSD1306 works with i2c clock up to 1.3 MHz, beyond this value, display may fail.
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*/
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I2C_SetClockPrescaler(0x10);
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// Switch alternative port
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I2C_SetPort(I2C_AlterPort_P32_P33);
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// Start I2C
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I2C_SetEnabled(HAL_State_ON);
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}
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void GPIO_Init(void)
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{
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// SDA
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GPIO_P3_SetMode(GPIO_Pin_3, GPIO_Mode_InOut_QBD);
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// SCL
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GPIO_P3_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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I2C_Init();
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SSD1306_Init();
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while(1)
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{
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SSD1306_DrawLine(0, 0, 127, 0, 1);
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SSD1306_DrawLine(0, 0, 0, 63, 1);
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SSD1306_DrawLine(127, 0, 127, 63, 1);
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SSD1306_DrawLine(0, 63, 127, 63, 1);
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SSD1306_UpdateScreen(); // display
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SYS_Delay(1000);
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SSD1306_Fill(0);
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SSD1306_ToggleInvert(); // Invert display
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SSD1306_UpdateScreen();
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SYS_Delay(1000);
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SSD1306_ToggleInvert(); // Invert display
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SSD1306_UpdateScreen();
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SYS_Delay(1000);
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y1 = 64, y2 = 0;
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while (y1 > 0)
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{
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SSD1306_DrawLine(0, y1, 127, y2, 1);
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SSD1306_UpdateScreen();
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y1 -= 2;
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y2 += 2;
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}
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SYS_Delay(1000);
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SSD1306_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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SSD1306_DrawLine(y1, 0, y2, 63, 1);
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SSD1306_UpdateScreen();
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y1 -= 2;
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y2 += 2;
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}
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SYS_Delay(1000);
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}
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}
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