mirror of
https://github.com/sle118/squeezelite-esp32.git
synced 2025-12-09 04:57:06 +03:00
64fcc0edec
- Display is a separated entity - Make battery configuration consistent with others - Led config part of led.c - Jack config moved to monitor.c
299 lines
10 KiB
C
299 lines
10 KiB
C
/**
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* Copyright (c) 2017-2018 Tara Keeling
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*
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* This software is released under the MIT License.
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* https://opensource.org/licenses/MIT
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*/
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#include <stdio.h>
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#include <string.h>
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#include <stdint.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <math.h>
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#include <esp_heap_caps.h>
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#include "ssd13x6.h"
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#define COM_Disable_LR_Remap 0
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#define COM_Enable_LR_Remap BIT( 5 )
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#define COM_Pins_Sequential 0
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#define COM_Pins_Alternative BIT( 4 )
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#define COM_ScanDir_LR 0
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#define COM_ScanDir_RL 1
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// used by both but different
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static uint8_t SSDCmd_Set_Display_Start_Line;
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static uint8_t SSDCmd_Set_Display_Offset;
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static uint8_t SSDCmd_Set_Column_Address;
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static uint8_t SSDCmd_Set_Display_CLK;
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static uint8_t SSDCmd_Set_Page_Address;
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// misc boundaries
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static uint8_t SSD13x6_Max_Col;
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static const uint8_t SSD13x6_Max_Row = 7;
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static bool SSD13x6_Init( struct SSD13x6_Device* DeviceHandle, int Width, int Height );
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bool SSD13x6_WriteCommand( struct SSD13x6_Device* DeviceHandle, SSDCmd SSDCommand ) {
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NullCheck( DeviceHandle->WriteCommand, return false );
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return ( DeviceHandle->WriteCommand ) ( DeviceHandle, SSDCommand );
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}
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bool SSD13x6_WriteData( struct SSD13x6_Device* DeviceHandle, uint8_t* Data, size_t DataLength ) {
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NullCheck( DeviceHandle->WriteData, return false );
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return ( DeviceHandle->WriteData ) ( DeviceHandle, Data, DataLength );
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}
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void SSD13x6_SetMuxRatio( struct SSD13x6_Device* DeviceHandle, uint8_t Ratio ) {
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SSD13x6_WriteCommand( DeviceHandle, 0xA8 );
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SSD13x6_WriteCommand( DeviceHandle, Ratio );
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}
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void SSD13x6_SetDisplayOffset( struct SSD13x6_Device* DeviceHandle, uint8_t Offset ) {
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SSD13x6_WriteCommand( DeviceHandle, SSDCmd_Set_Display_Offset );
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SSD13x6_WriteCommand( DeviceHandle, Offset );
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}
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void SSD13x6_SetDisplayStartLine( struct SSD13x6_Device* DeviceHandle, int Line ) {
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SSD13x6_WriteCommand( DeviceHandle, SSDCmd_Set_Display_Start_Line + ( uint32_t ) ( Line & 0x1F ) );
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}
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void SSD13x6_SetContrast( struct SSD13x6_Device* DeviceHandle, uint8_t Contrast ) {
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SSD13x6_WriteCommand( DeviceHandle, 0x81 );
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SSD13x6_WriteCommand( DeviceHandle, Contrast );
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}
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void SSD13x6_EnableDisplayRAM( struct SSD13x6_Device* DeviceHandle ) {
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SSD13x6_WriteCommand( DeviceHandle, 0xA4 );
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}
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void SSD13x6_DisableDisplayRAM( struct SSD13x6_Device* DeviceHandle ) {
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SSD13x6_WriteCommand( DeviceHandle, 0xA5 );
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}
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void SSD13x6_SetInverted( struct SSD13x6_Device* DeviceHandle, bool Inverted ) {
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SSD13x6_WriteCommand( DeviceHandle, Inverted ? 0xA7 : 0xA6 );
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}
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void SSD13x6_SetDisplayClocks( struct SSD13x6_Device* DeviceHandle, uint32_t DisplayClockDivider, uint32_t OSCFrequency ) {
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DisplayClockDivider&= 0x0F;
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OSCFrequency&= 0x0F;
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SSD13x6_WriteCommand( DeviceHandle, SSDCmd_Set_Display_CLK );
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SSD13x6_WriteCommand( DeviceHandle, ( ( OSCFrequency << 4 ) | DisplayClockDivider ) );
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}
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void SSD13x6_DisplayOn( struct SSD13x6_Device* DeviceHandle ) {
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SSD13x6_WriteCommand( DeviceHandle, 0xAF );
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}
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void SSD13x6_DisplayOff( struct SSD13x6_Device* DeviceHandle ) {
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SSD13x6_WriteCommand( DeviceHandle, 0xAE );
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}
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void SSD132x_ReMap( struct SSD13x6_Device* DeviceHandle ) {
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SSD13x6_WriteCommand( DeviceHandle, 0xA0 );
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SSD13x6_WriteCommand( DeviceHandle, DeviceHandle->ReMap );
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}
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void SSD13x6_SetDisplayAddressMode( struct SSD13x6_Device* DeviceHandle, SSD13x6_AddressMode AddressMode ) {
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switch (DeviceHandle->Model) {
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case SSD1306:
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SSD13x6_WriteCommand( DeviceHandle, 0x20 );
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SSD13x6_WriteCommand( DeviceHandle, AddressMode );
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break;
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case SSD1326:
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DeviceHandle->ReMap = (AddressMode == AddressMode_Horizontal) ? (DeviceHandle->ReMap & ~0x80) : (DeviceHandle->ReMap | 0x80);
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SSD132x_ReMap(DeviceHandle);
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break;
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}
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}
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void SSD13x6_Update( struct SSD13x6_Device* DeviceHandle ) {
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SSD13x6_SetColumnAddress( DeviceHandle, 0, DeviceHandle->Width - 1);
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SSD13x6_SetPageAddress( DeviceHandle, 0, DeviceHandle->Height / 8 - 1);
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SSD13x6_WriteData( DeviceHandle, DeviceHandle->Framebuffer, DeviceHandle->FramebufferSize );
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}
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void SSD13x6_WriteRawData( struct SSD13x6_Device* DeviceHandle, uint8_t* Data, size_t DataLength ) {
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NullCheck( Data, return );
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DataLength = DataLength > DeviceHandle->FramebufferSize ? DeviceHandle->FramebufferSize : DataLength;
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if ( DataLength > 0 ) SSD13x6_WriteData( DeviceHandle, Data, DataLength );
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}
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void SSD13x6_SetHFlip( struct SSD13x6_Device* DeviceHandle, bool On ) {
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switch (DeviceHandle->Model) {
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case SSD1306:
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SSD13x6_WriteCommand( DeviceHandle, On ? 0xA1 : 0xA0 );
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break;
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case SSD1326:
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DeviceHandle->ReMap = On ? (DeviceHandle->ReMap | 0x01) : (DeviceHandle->ReMap & ~0x01);
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SSD132x_ReMap(DeviceHandle);
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break;
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}
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}
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void SSD13x6_SetVFlip( struct SSD13x6_Device* DeviceHandle, bool On ) {
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switch (DeviceHandle->Model) {
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case SSD1306:
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SSD13x6_WriteCommand( DeviceHandle, On ? 0xC8 : 0xC0 );
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break;
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case SSD1326:
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DeviceHandle->ReMap = On ? (DeviceHandle->ReMap | 0x05) : (DeviceHandle->ReMap & ~0x05);
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SSD132x_ReMap( DeviceHandle );
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break;
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}
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}
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void SSD13x6_SetColumnAddress( struct SSD13x6_Device* DeviceHandle, uint8_t Start, uint8_t End ) {
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CheckBounds( Start > SSD13x6_Max_Col, return );
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CheckBounds( End > SSD13x6_Max_Col, return );
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SSD13x6_WriteCommand( DeviceHandle, SSDCmd_Set_Column_Address );
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SSD13x6_WriteCommand( DeviceHandle, Start );
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SSD13x6_WriteCommand( DeviceHandle, End );
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}
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void SSD13x6_SetPageAddress( struct SSD13x6_Device* DeviceHandle, uint8_t Start, uint8_t End ) {
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NullCheck( DeviceHandle, return );
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CheckBounds( Start > SSD13x6_Max_Row, return );
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CheckBounds( End > SSD13x6_Max_Row, return );
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// in case of SSD1326, this is sub-optimal as it can address by line, not by page
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if (DeviceHandle->Model != SSD1306) {
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Start *= 8;
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End = (End + 1) * 8 - 1;
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}
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SSD13x6_WriteCommand( DeviceHandle, SSDCmd_Set_Page_Address );
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SSD13x6_WriteCommand( DeviceHandle, Start );
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SSD13x6_WriteCommand( DeviceHandle, End );
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}
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bool SSD13x6_HWReset( struct SSD13x6_Device* DeviceHandle ) {
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NullCheck( DeviceHandle, return 0 );
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if ( DeviceHandle->Reset != NULL ) {
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return ( DeviceHandle->Reset ) ( DeviceHandle );
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}
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/* This should always return true if there is no reset callback as
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* no error would have occurred during the non existant reset.
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*/
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return true;
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}
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/*
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* This is all a big giant mystery that I have yet to figure out.
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* Beware all ye who enter.
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*/
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static void SetCOMPinConfiguration( struct SSD13x6_Device* DeviceHandle, uint32_t RemapCFG, uint32_t PinCFG, int ScanDir ) {
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SSD13x6_WriteCommand( DeviceHandle, 0xDA );
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SSD13x6_WriteCommand( DeviceHandle, ( uint8_t ) ( RemapCFG | PinCFG | BIT( 1 ) ) );
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SSD13x6_WriteCommand( DeviceHandle,
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( ScanDir == COM_ScanDir_LR ) ? 0xC0 : 0xC8
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);
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}
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static bool SSD13x6_Init( struct SSD13x6_Device* DeviceHandle, int Width, int Height ) {
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DeviceHandle->Width = Width;
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DeviceHandle->Height = Height;
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DeviceHandle->FramebufferSize = ( DeviceHandle->Width * Height ) / 8;
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// DeviceHandle->Framebuffer = heap_caps_calloc( 1, DeviceHandle->FramebufferSize, MALLOC_CAP_INTERNAL );
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DeviceHandle->Framebuffer = calloc( 1, DeviceHandle->FramebufferSize );
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NullCheck( DeviceHandle->Framebuffer, return false );
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SSD13x6_HWReset( DeviceHandle );
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if (DeviceHandle->Model == SSD1306) {
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SSDCmd_Set_Display_Start_Line = 0x40;
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SSDCmd_Set_Display_Offset = 0xD3;
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SSDCmd_Set_Column_Address = 0x21,
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SSDCmd_Set_Display_CLK = 0xD5;
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SSDCmd_Set_Page_Address = 0x22;
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SSD13x6_Max_Col = 127;
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// charge pump regulator, do direct init
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SSD13x6_WriteCommand( DeviceHandle, 0x8D );
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SSD13x6_WriteCommand( DeviceHandle, 0x14 ); /* MAGIC NUMBER */
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if ( Height == 64 ) {
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SetCOMPinConfiguration( DeviceHandle, COM_Disable_LR_Remap, COM_Pins_Alternative, COM_ScanDir_LR );
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} else {
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SetCOMPinConfiguration( DeviceHandle, COM_Disable_LR_Remap, COM_Pins_Sequential, COM_ScanDir_LR );
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}
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} else if (DeviceHandle->Model == SSD1326) {
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SSDCmd_Set_Display_Start_Line = 0xA1;
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SSDCmd_Set_Display_Offset = 0xA2;
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SSDCmd_Set_Column_Address = 0x15;
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SSDCmd_Set_Display_CLK = 0xB3;
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SSDCmd_Set_Page_Address = 0x75; // not really a page but a row
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SSD13x6_Max_Col = 255;
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// no gray scale
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DeviceHandle->ReMap |= 0x10;
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SSD132x_ReMap( DeviceHandle );
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SSD13x6_SetHFlip( DeviceHandle, false );
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SSD13x6_SetVFlip( DeviceHandle, false );
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}
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SSD13x6_SetMuxRatio( DeviceHandle, Height - 1 );
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SSD13x6_SetDisplayOffset( DeviceHandle, 0x00 );
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SSD13x6_SetDisplayStartLine( DeviceHandle, 0 );
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SSD13x6_SetContrast( DeviceHandle, 0x7F );
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SSD13x6_DisableDisplayRAM( DeviceHandle );
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SSD13x6_SetInverted( DeviceHandle, false );
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SSD13x6_SetDisplayClocks( DeviceHandle, 0, 8 );
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SSD13x6_SetDisplayAddressMode( DeviceHandle, AddressMode_Vertical );
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SSD13x6_SetColumnAddress( DeviceHandle, 0, DeviceHandle->Width - 1 );
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SSD13x6_SetPageAddress( DeviceHandle, 0, ( DeviceHandle->Height / 8 ) - 1 );
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SSD13x6_EnableDisplayRAM( DeviceHandle );
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SSD13x6_DisplayOn( DeviceHandle );
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SSD13x6_Update( DeviceHandle );
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return true;
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}
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bool SSD13x6_Init_I2C( struct SSD13x6_Device* DeviceHandle, int Width, int Height, int I2CAddress, int ResetPin, WriteCommandProc WriteCommand, WriteDataProc WriteData, ResetProc Reset ) {
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NullCheck( DeviceHandle, return false );
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NullCheck( WriteCommand, return false );
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NullCheck( WriteData, return false );
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memset( DeviceHandle, 0, sizeof( struct SSD13x6_Device ) );
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DeviceHandle->WriteCommand = WriteCommand;
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DeviceHandle->WriteData = WriteData;
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DeviceHandle->Reset = Reset;
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DeviceHandle->Address = I2CAddress;
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DeviceHandle->RSTPin = ResetPin;
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return SSD13x6_Init( DeviceHandle, Width, Height );
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}
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bool SSD13x6_Init_SPI( struct SSD13x6_Device* DeviceHandle, int Width, int Height, int ResetPin, int CSPin, spi_device_handle_t SPIHandle, WriteCommandProc WriteCommand, WriteDataProc WriteData, ResetProc Reset ) {
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NullCheck( DeviceHandle, return false );
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NullCheck( WriteCommand, return false );
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NullCheck( WriteData, return false );
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memset( DeviceHandle, 0, sizeof( struct SSD13x6_Device ) );
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DeviceHandle->WriteCommand = WriteCommand;
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DeviceHandle->WriteData = WriteData;
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DeviceHandle->Reset = Reset;
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DeviceHandle->SPIHandle = SPIHandle;
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DeviceHandle->RSTPin = ResetPin;
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DeviceHandle->CSPin = CSPin;
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return SSD13x6_Init( DeviceHandle, Width, Height );
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}
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