ePaperDisplay (ePD) gde021a1 driver. This ePD is present on the STMicroelectronics Discovery L053 board (STM32L0538-DISCO).
Dependents: DISCO-L053C8_ePD_demo DISCO-L053C8_ePD_demo Ruche_V1 DISCO-L053C8_ePD_demo ... more
GDE021A1 ePaper display Library.
EPD_GDE021A1.cpp@1:6ee9c1afd6ec, 2015-04-28 (annotated)
- Committer:
- bcostm
- Date:
- Tue Apr 28 12:02:43 2015 +0000
- Revision:
- 1:6ee9c1afd6ec
- Parent:
- 0:5d8241e6bd3b
Add code example.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
bcostm | 0:5d8241e6bd3b | 1 | /* Copyright (c) 2010-2011 mbed.org, MIT License |
bcostm | 0:5d8241e6bd3b | 2 | * |
bcostm | 0:5d8241e6bd3b | 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy of this software |
bcostm | 0:5d8241e6bd3b | 4 | * and associated documentation files (the "Software"), to deal in the Software without |
bcostm | 0:5d8241e6bd3b | 5 | * restriction, including without limitation the rights to use, copy, modify, merge, publish, |
bcostm | 0:5d8241e6bd3b | 6 | * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the |
bcostm | 0:5d8241e6bd3b | 7 | * Software is furnished to do so, subject to the following conditions: |
bcostm | 0:5d8241e6bd3b | 8 | * |
bcostm | 0:5d8241e6bd3b | 9 | * The above copyright notice and this permission notice shall be included in all copies or |
bcostm | 0:5d8241e6bd3b | 10 | * substantial portions of the Software. |
bcostm | 0:5d8241e6bd3b | 11 | * |
bcostm | 0:5d8241e6bd3b | 12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
bcostm | 0:5d8241e6bd3b | 13 | * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
bcostm | 0:5d8241e6bd3b | 14 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
bcostm | 0:5d8241e6bd3b | 15 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
bcostm | 0:5d8241e6bd3b | 16 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
bcostm | 0:5d8241e6bd3b | 17 | */ |
bcostm | 0:5d8241e6bd3b | 18 | |
bcostm | 0:5d8241e6bd3b | 19 | #include "EPD_GDE021A1.h" |
bcostm | 0:5d8241e6bd3b | 20 | |
bcostm | 0:5d8241e6bd3b | 21 | /** |
bcostm | 0:5d8241e6bd3b | 22 | * @brief GDE021A1 Size |
bcostm | 0:5d8241e6bd3b | 23 | */ |
bcostm | 0:5d8241e6bd3b | 24 | #define GDE021A1_EPD_PIXEL_WIDTH ((uint16_t)172) |
bcostm | 0:5d8241e6bd3b | 25 | #define GDE021A1_EPD_PIXEL_HEIGHT ((uint16_t)18) |
bcostm | 0:5d8241e6bd3b | 26 | |
bcostm | 0:5d8241e6bd3b | 27 | /** |
bcostm | 0:5d8241e6bd3b | 28 | * @brief GDE021A1 Registers |
bcostm | 0:5d8241e6bd3b | 29 | */ |
bcostm | 0:5d8241e6bd3b | 30 | #define EPD_REG_0 0x00 /* Status Read */ |
bcostm | 0:5d8241e6bd3b | 31 | #define EPD_REG_1 0x01 /* Driver Output Control */ |
bcostm | 0:5d8241e6bd3b | 32 | #define EPD_REG_3 0x03 /* Gate driving voltage control */ |
bcostm | 0:5d8241e6bd3b | 33 | #define EPD_REG_4 0x04 /* Source driving coltage control */ |
bcostm | 0:5d8241e6bd3b | 34 | #define EPD_REG_7 0x07 /* Display Control */ |
bcostm | 0:5d8241e6bd3b | 35 | #define EPD_REG_11 0x0B /* Gate and Sorce non overlap period COntrol */ |
bcostm | 0:5d8241e6bd3b | 36 | #define EPD_REG_15 0x0F /* Gate scan start */ |
bcostm | 0:5d8241e6bd3b | 37 | #define EPD_REG_16 0x10 /* Deep Sleep mode setting */ |
bcostm | 0:5d8241e6bd3b | 38 | #define EPD_REG_17 0x11 /* Data Entry Mode Setting */ |
bcostm | 0:5d8241e6bd3b | 39 | #define EPD_REG_18 0x12 /* SWRESET */ |
bcostm | 0:5d8241e6bd3b | 40 | #define EPD_REG_26 0x1A /* Temperature Sensor Control (Write to Temp Register) */ |
bcostm | 0:5d8241e6bd3b | 41 | #define EPD_REG_27 0x1B /* Temperature Sensor Control(Read from Temp Register) */ |
bcostm | 0:5d8241e6bd3b | 42 | #define EPD_REG_28 0x1C /* Temperature Sensor Control(Write Command to Temp sensor) */ |
bcostm | 0:5d8241e6bd3b | 43 | #define EPD_REG_29 0x1D /* Temperature Sensor Control(Load temperature register with temperature sensor reading) */ |
bcostm | 0:5d8241e6bd3b | 44 | #define EPD_REG_32 0x20 /* Master activation */ |
bcostm | 0:5d8241e6bd3b | 45 | #define EPD_REG_33 0x21 /* Display update */ |
bcostm | 0:5d8241e6bd3b | 46 | #define EPD_REG_34 0x22 /* Display update control 2 */ |
bcostm | 0:5d8241e6bd3b | 47 | #define EPD_REG_36 0x24 /* write RAM */ |
bcostm | 0:5d8241e6bd3b | 48 | #define EPD_REG_37 0x25 /* Read RAM */ |
bcostm | 0:5d8241e6bd3b | 49 | #define EPD_REG_40 0x28 /* VCOM sense */ |
bcostm | 0:5d8241e6bd3b | 50 | #define EPD_REG_41 0x29 /* VCOM Sense duration */ |
bcostm | 0:5d8241e6bd3b | 51 | #define EPD_REG_42 0x2A /* VCOM OTP program */ |
bcostm | 0:5d8241e6bd3b | 52 | #define EPD_REG_44 0x2C /* Write VCOMregister */ |
bcostm | 0:5d8241e6bd3b | 53 | #define EPD_REG_45 0x2D /* Read OTP registers */ |
bcostm | 0:5d8241e6bd3b | 54 | #define EPD_REG_48 0x30 /* Program WS OTP */ |
bcostm | 0:5d8241e6bd3b | 55 | #define EPD_REG_50 0x32 /* Write LUT register */ |
bcostm | 0:5d8241e6bd3b | 56 | #define EPD_REG_51 0x33 /* Read LUT register */ |
bcostm | 0:5d8241e6bd3b | 57 | #define EPD_REG_54 0x36 /* Program OTP selection */ |
bcostm | 0:5d8241e6bd3b | 58 | #define EPD_REG_55 0x37 /* Proceed OTP selection */ |
bcostm | 0:5d8241e6bd3b | 59 | #define EPD_REG_58 0x3A /* Set dummy line pulse period */ |
bcostm | 0:5d8241e6bd3b | 60 | #define EPD_REG_59 0x3B /* Set Gate line width */ |
bcostm | 0:5d8241e6bd3b | 61 | #define EPD_REG_60 0x3C /* Select Border waveform */ |
bcostm | 0:5d8241e6bd3b | 62 | #define EPD_REG_68 0x44 /* Set RAM X - Address Start / End Position */ |
bcostm | 0:5d8241e6bd3b | 63 | #define EPD_REG_69 0x45 /* Set RAM Y - Address Start / End Position */ |
bcostm | 0:5d8241e6bd3b | 64 | #define EPD_REG_78 0x4E /* Set RAM X Address Counter */ |
bcostm | 0:5d8241e6bd3b | 65 | #define EPD_REG_79 0x4F /* Set RAM Y Address Counter */ |
bcostm | 0:5d8241e6bd3b | 66 | #define EPD_REG_240 0xF0 /* Booster Set Internal Feedback Selection */ |
bcostm | 0:5d8241e6bd3b | 67 | #define EPD_REG_255 0xFF /* NOP */ |
bcostm | 0:5d8241e6bd3b | 68 | |
bcostm | 0:5d8241e6bd3b | 69 | /* Look-up table for the epaper (90 bytes) */ |
bcostm | 0:5d8241e6bd3b | 70 | const unsigned char WF_LUT[]={ |
bcostm | 0:5d8241e6bd3b | 71 | 0x82,0x00,0x00,0x00,0xAA,0x00,0x00,0x00, |
bcostm | 0:5d8241e6bd3b | 72 | 0xAA,0xAA,0x00,0x00,0xAA,0xAA,0xAA,0x00, |
bcostm | 0:5d8241e6bd3b | 73 | 0x55,0xAA,0xAA,0x00,0x55,0x55,0x55,0x55, |
bcostm | 0:5d8241e6bd3b | 74 | 0xAA,0xAA,0xAA,0xAA,0x55,0x55,0x55,0x55, |
bcostm | 0:5d8241e6bd3b | 75 | 0xAA,0xAA,0xAA,0xAA,0x15,0x15,0x15,0x15, |
bcostm | 0:5d8241e6bd3b | 76 | 0x05,0x05,0x05,0x05,0x01,0x01,0x01,0x01, |
bcostm | 0:5d8241e6bd3b | 77 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
bcostm | 0:5d8241e6bd3b | 78 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
bcostm | 0:5d8241e6bd3b | 79 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
bcostm | 0:5d8241e6bd3b | 80 | 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00, |
bcostm | 0:5d8241e6bd3b | 81 | 0x41,0x45,0xF1,0xFF,0x5F,0x55,0x01,0x00, |
bcostm | 0:5d8241e6bd3b | 82 | 0x00,0x00,}; |
bcostm | 0:5d8241e6bd3b | 83 | |
bcostm | 0:5d8241e6bd3b | 84 | // Constructor |
bcostm | 0:5d8241e6bd3b | 85 | EPD_GDE021A1::EPD_GDE021A1(PinName cs, PinName dc, PinName rst, PinName bsy, PinName pwr, PinName spi_mosi, PinName spi_miso, PinName spi_sck) : |
bcostm | 0:5d8241e6bd3b | 86 | _cs(cs, 1), |
bcostm | 0:5d8241e6bd3b | 87 | _dc(dc, 1), |
bcostm | 0:5d8241e6bd3b | 88 | _rst(rst, 1), |
bcostm | 0:5d8241e6bd3b | 89 | _bsy(bsy, PullDown), |
bcostm | 0:5d8241e6bd3b | 90 | _pwr(pwr, 1), |
bcostm | 0:5d8241e6bd3b | 91 | _spi(spi_mosi, spi_miso, spi_sck) |
bcostm | 0:5d8241e6bd3b | 92 | { |
bcostm | 0:5d8241e6bd3b | 93 | _pwr = 0; |
bcostm | 0:5d8241e6bd3b | 94 | _cs = 0; |
bcostm | 0:5d8241e6bd3b | 95 | _cs = 1; |
bcostm | 0:5d8241e6bd3b | 96 | _rst = 1; |
bcostm | 0:5d8241e6bd3b | 97 | |
bcostm | 0:5d8241e6bd3b | 98 | wait_ms(10); |
bcostm | 0:5d8241e6bd3b | 99 | |
bcostm | 0:5d8241e6bd3b | 100 | _spi.format(8); |
bcostm | 0:5d8241e6bd3b | 101 | _spi.frequency(1000000); |
bcostm | 0:5d8241e6bd3b | 102 | |
bcostm | 0:5d8241e6bd3b | 103 | gde021a1_Init(); |
bcostm | 0:5d8241e6bd3b | 104 | |
bcostm | 0:5d8241e6bd3b | 105 | Clear(EPD_COLOR_WHITE); |
bcostm | 0:5d8241e6bd3b | 106 | |
bcostm | 0:5d8241e6bd3b | 107 | SetFont(&Font12); |
bcostm | 0:5d8241e6bd3b | 108 | } |
bcostm | 0:5d8241e6bd3b | 109 | |
bcostm | 0:5d8241e6bd3b | 110 | // Destructor |
bcostm | 0:5d8241e6bd3b | 111 | EPD_GDE021A1::~EPD_GDE021A1() { } |
bcostm | 0:5d8241e6bd3b | 112 | |
bcostm | 0:5d8241e6bd3b | 113 | //================================================================================================================= |
bcostm | 0:5d8241e6bd3b | 114 | // Public methods |
bcostm | 0:5d8241e6bd3b | 115 | //================================================================================================================= |
bcostm | 0:5d8241e6bd3b | 116 | |
bcostm | 0:5d8241e6bd3b | 117 | uint32_t EPD_GDE021A1::GetXSize(void) |
bcostm | 0:5d8241e6bd3b | 118 | { |
bcostm | 0:5d8241e6bd3b | 119 | return(gde021a1_GetEpdPixelWidth()); |
bcostm | 0:5d8241e6bd3b | 120 | } |
bcostm | 0:5d8241e6bd3b | 121 | |
bcostm | 0:5d8241e6bd3b | 122 | uint32_t EPD_GDE021A1::GetYSize(void) |
bcostm | 0:5d8241e6bd3b | 123 | { |
bcostm | 0:5d8241e6bd3b | 124 | return(gde021a1_GetEpdPixelHeight()); |
bcostm | 0:5d8241e6bd3b | 125 | } |
bcostm | 0:5d8241e6bd3b | 126 | |
bcostm | 0:5d8241e6bd3b | 127 | void EPD_GDE021A1::SetFont(sFONT *pFonts) |
bcostm | 0:5d8241e6bd3b | 128 | { |
bcostm | 0:5d8241e6bd3b | 129 | pFont = pFonts; |
bcostm | 0:5d8241e6bd3b | 130 | } |
bcostm | 0:5d8241e6bd3b | 131 | |
bcostm | 0:5d8241e6bd3b | 132 | sFONT *EPD_GDE021A1::GetFont(void) |
bcostm | 0:5d8241e6bd3b | 133 | { |
bcostm | 0:5d8241e6bd3b | 134 | return pFont; |
bcostm | 0:5d8241e6bd3b | 135 | } |
bcostm | 0:5d8241e6bd3b | 136 | |
bcostm | 0:5d8241e6bd3b | 137 | void EPD_GDE021A1::Clear(uint16_t Color) |
bcostm | 0:5d8241e6bd3b | 138 | { |
bcostm | 0:5d8241e6bd3b | 139 | uint32_t index = 0; |
bcostm | 0:5d8241e6bd3b | 140 | |
bcostm | 0:5d8241e6bd3b | 141 | gde021a1_SetDisplayWindow(0, 0, 171, 17); |
bcostm | 0:5d8241e6bd3b | 142 | |
bcostm | 0:5d8241e6bd3b | 143 | for(index = 0; index < 3096; index++) |
bcostm | 0:5d8241e6bd3b | 144 | { |
bcostm | 0:5d8241e6bd3b | 145 | gde021a1_WritePixel(Color); |
bcostm | 0:5d8241e6bd3b | 146 | } |
bcostm | 0:5d8241e6bd3b | 147 | } |
bcostm | 0:5d8241e6bd3b | 148 | |
bcostm | 0:5d8241e6bd3b | 149 | void EPD_GDE021A1::DisplayChar(uint16_t Xpos, uint16_t Ypos, uint8_t Ascii) |
bcostm | 0:5d8241e6bd3b | 150 | { |
bcostm | 0:5d8241e6bd3b | 151 | Ascii -= 32; |
bcostm | 0:5d8241e6bd3b | 152 | |
bcostm | 0:5d8241e6bd3b | 153 | DrawChar(Xpos, Ypos, &pFont->table[Ascii * ((pFont->Height) * (pFont->Width))]); |
bcostm | 0:5d8241e6bd3b | 154 | } |
bcostm | 0:5d8241e6bd3b | 155 | |
bcostm | 0:5d8241e6bd3b | 156 | void EPD_GDE021A1::DisplayStringAt(uint16_t Xpos, uint16_t Ypos, uint8_t *Text, Text_AlignModeTypdef Mode) |
bcostm | 0:5d8241e6bd3b | 157 | { |
bcostm | 0:5d8241e6bd3b | 158 | uint16_t refcolumn = 1, i = 0; |
bcostm | 0:5d8241e6bd3b | 159 | uint32_t size = 0, xsize = 0; |
bcostm | 0:5d8241e6bd3b | 160 | uint8_t *ptr = Text; |
bcostm | 0:5d8241e6bd3b | 161 | |
bcostm | 0:5d8241e6bd3b | 162 | /* Get the text size */ |
bcostm | 0:5d8241e6bd3b | 163 | while (*ptr++) size ++ ; |
bcostm | 0:5d8241e6bd3b | 164 | |
bcostm | 0:5d8241e6bd3b | 165 | /* Characters number per line */ |
bcostm | 0:5d8241e6bd3b | 166 | xsize = (GetXSize()/pFont->Width); |
bcostm | 0:5d8241e6bd3b | 167 | |
bcostm | 0:5d8241e6bd3b | 168 | switch (Mode) |
bcostm | 0:5d8241e6bd3b | 169 | { |
bcostm | 0:5d8241e6bd3b | 170 | case CENTER_MODE: |
bcostm | 0:5d8241e6bd3b | 171 | { |
bcostm | 0:5d8241e6bd3b | 172 | refcolumn = Xpos + ((xsize - size)* pFont->Width) / 2; |
bcostm | 0:5d8241e6bd3b | 173 | break; |
bcostm | 0:5d8241e6bd3b | 174 | } |
bcostm | 0:5d8241e6bd3b | 175 | case LEFT_MODE: |
bcostm | 0:5d8241e6bd3b | 176 | { |
bcostm | 0:5d8241e6bd3b | 177 | refcolumn = Xpos; |
bcostm | 0:5d8241e6bd3b | 178 | break; |
bcostm | 0:5d8241e6bd3b | 179 | } |
bcostm | 0:5d8241e6bd3b | 180 | case RIGHT_MODE: |
bcostm | 0:5d8241e6bd3b | 181 | { |
bcostm | 0:5d8241e6bd3b | 182 | refcolumn = - Xpos + ((xsize - size)*pFont->Width); |
bcostm | 0:5d8241e6bd3b | 183 | break; |
bcostm | 0:5d8241e6bd3b | 184 | } |
bcostm | 0:5d8241e6bd3b | 185 | default: |
bcostm | 0:5d8241e6bd3b | 186 | { |
bcostm | 0:5d8241e6bd3b | 187 | refcolumn = Xpos; |
bcostm | 0:5d8241e6bd3b | 188 | break; |
bcostm | 0:5d8241e6bd3b | 189 | } |
bcostm | 0:5d8241e6bd3b | 190 | } |
bcostm | 0:5d8241e6bd3b | 191 | |
bcostm | 0:5d8241e6bd3b | 192 | /* Send the string character by character on EPD */ |
bcostm | 0:5d8241e6bd3b | 193 | while ((*Text != 0) & (((GetXSize() - (i*pFont->Width)) & 0xFFFF) >= pFont->Width)) |
bcostm | 0:5d8241e6bd3b | 194 | { |
bcostm | 0:5d8241e6bd3b | 195 | /* Display one character on EPD */ |
bcostm | 0:5d8241e6bd3b | 196 | DisplayChar(refcolumn, Ypos, *Text); |
bcostm | 0:5d8241e6bd3b | 197 | /* Decrement the column position by 16 */ |
bcostm | 0:5d8241e6bd3b | 198 | refcolumn += pFont->Width; |
bcostm | 0:5d8241e6bd3b | 199 | /* Point on the next character */ |
bcostm | 0:5d8241e6bd3b | 200 | Text++; |
bcostm | 0:5d8241e6bd3b | 201 | i++; |
bcostm | 0:5d8241e6bd3b | 202 | } |
bcostm | 0:5d8241e6bd3b | 203 | } |
bcostm | 0:5d8241e6bd3b | 204 | |
bcostm | 0:5d8241e6bd3b | 205 | void EPD_GDE021A1::DisplayStringAtLine(uint16_t Line, uint8_t *ptr, Text_AlignModeTypdef Mode) |
bcostm | 0:5d8241e6bd3b | 206 | { |
bcostm | 0:5d8241e6bd3b | 207 | DisplayStringAt(0, LINE(Line), ptr, Mode); |
bcostm | 0:5d8241e6bd3b | 208 | } |
bcostm | 0:5d8241e6bd3b | 209 | |
bcostm | 0:5d8241e6bd3b | 210 | void EPD_GDE021A1::DrawHLine(uint16_t Xpos, uint16_t Ypos, uint16_t Length) |
bcostm | 0:5d8241e6bd3b | 211 | { |
bcostm | 0:5d8241e6bd3b | 212 | uint32_t index = 0; |
bcostm | 0:5d8241e6bd3b | 213 | |
bcostm | 0:5d8241e6bd3b | 214 | gde021a1_SetDisplayWindow(Xpos, Ypos, Xpos + Length, Ypos); |
bcostm | 0:5d8241e6bd3b | 215 | |
bcostm | 0:5d8241e6bd3b | 216 | for(index = 0; index < Length; index++) |
bcostm | 0:5d8241e6bd3b | 217 | { |
bcostm | 0:5d8241e6bd3b | 218 | /* Prepare the register to write data on the RAM */ |
bcostm | 0:5d8241e6bd3b | 219 | gde021a1_WritePixel(0x3F); |
bcostm | 0:5d8241e6bd3b | 220 | } |
bcostm | 0:5d8241e6bd3b | 221 | } |
bcostm | 0:5d8241e6bd3b | 222 | |
bcostm | 0:5d8241e6bd3b | 223 | void EPD_GDE021A1::DrawVLine(uint16_t Xpos, uint16_t Ypos, uint16_t Length) |
bcostm | 0:5d8241e6bd3b | 224 | { |
bcostm | 0:5d8241e6bd3b | 225 | uint32_t index = 0; |
bcostm | 0:5d8241e6bd3b | 226 | |
bcostm | 0:5d8241e6bd3b | 227 | gde021a1_SetDisplayWindow(Xpos, Ypos, Xpos, Ypos + Length); |
bcostm | 0:5d8241e6bd3b | 228 | |
bcostm | 0:5d8241e6bd3b | 229 | for(index = 0; index < Length; index++) |
bcostm | 0:5d8241e6bd3b | 230 | { |
bcostm | 0:5d8241e6bd3b | 231 | /* Prepare the register to write data on the RAM */ |
bcostm | 0:5d8241e6bd3b | 232 | gde021a1_WritePixel(0x00); |
bcostm | 0:5d8241e6bd3b | 233 | } |
bcostm | 0:5d8241e6bd3b | 234 | } |
bcostm | 0:5d8241e6bd3b | 235 | |
bcostm | 0:5d8241e6bd3b | 236 | void EPD_GDE021A1::DrawRect(uint16_t Xpos, uint16_t Ypos, uint16_t Width, uint16_t Height) |
bcostm | 0:5d8241e6bd3b | 237 | { |
bcostm | 0:5d8241e6bd3b | 238 | /* Draw horizontal lines */ |
bcostm | 0:5d8241e6bd3b | 239 | DrawHLine(Xpos, Ypos, Width); |
bcostm | 0:5d8241e6bd3b | 240 | DrawHLine(Xpos, (Ypos + Height), (Width + 1)); |
bcostm | 0:5d8241e6bd3b | 241 | |
bcostm | 0:5d8241e6bd3b | 242 | /* Draw vertical lines */ |
bcostm | 0:5d8241e6bd3b | 243 | DrawVLine(Xpos, Ypos, Height); |
bcostm | 0:5d8241e6bd3b | 244 | DrawVLine((Xpos + Width), Ypos , Height); |
bcostm | 0:5d8241e6bd3b | 245 | } |
bcostm | 0:5d8241e6bd3b | 246 | |
bcostm | 0:5d8241e6bd3b | 247 | void EPD_GDE021A1::FillRect(uint16_t Xpos, uint16_t Ypos, uint16_t Width, uint16_t Height) |
bcostm | 0:5d8241e6bd3b | 248 | { |
bcostm | 0:5d8241e6bd3b | 249 | uint16_t index = 0; |
bcostm | 0:5d8241e6bd3b | 250 | |
bcostm | 0:5d8241e6bd3b | 251 | /* Set the rectangle */ |
bcostm | 0:5d8241e6bd3b | 252 | gde021a1_SetDisplayWindow(Xpos, Ypos, (Xpos + Width), (Ypos + Height)); |
bcostm | 0:5d8241e6bd3b | 253 | |
bcostm | 0:5d8241e6bd3b | 254 | for(index = 0; index < 3096; index++) |
bcostm | 0:5d8241e6bd3b | 255 | { |
bcostm | 0:5d8241e6bd3b | 256 | gde021a1_WritePixel(0xFF); |
bcostm | 0:5d8241e6bd3b | 257 | } |
bcostm | 0:5d8241e6bd3b | 258 | } |
bcostm | 0:5d8241e6bd3b | 259 | |
bcostm | 0:5d8241e6bd3b | 260 | void EPD_GDE021A1::DrawImage(uint16_t Xpos, uint16_t Ypos, uint16_t Xsize, uint16_t Ysize, uint8_t *pdata) |
bcostm | 0:5d8241e6bd3b | 261 | { |
bcostm | 0:5d8241e6bd3b | 262 | /* Set display window */ |
bcostm | 0:5d8241e6bd3b | 263 | gde021a1_SetDisplayWindow(Xpos, Ypos, (Xpos+Ysize-1), (Ypos+(Xsize/4)-1)); |
bcostm | 0:5d8241e6bd3b | 264 | |
bcostm | 0:5d8241e6bd3b | 265 | gde021a1_DrawImage(Xpos, Ypos, Xsize, Ysize, pdata); |
bcostm | 0:5d8241e6bd3b | 266 | |
bcostm | 0:5d8241e6bd3b | 267 | gde021a1_SetDisplayWindow(0, 0, GetXSize(), GetYSize()); |
bcostm | 0:5d8241e6bd3b | 268 | } |
bcostm | 0:5d8241e6bd3b | 269 | |
bcostm | 0:5d8241e6bd3b | 270 | void EPD_GDE021A1::CloseChargePump(void) |
bcostm | 0:5d8241e6bd3b | 271 | { |
bcostm | 0:5d8241e6bd3b | 272 | /* Close charge pump */ |
bcostm | 0:5d8241e6bd3b | 273 | gde021a1_CloseChargePump(); |
bcostm | 0:5d8241e6bd3b | 274 | |
bcostm | 0:5d8241e6bd3b | 275 | wait_ms(400); |
bcostm | 0:5d8241e6bd3b | 276 | } |
bcostm | 0:5d8241e6bd3b | 277 | |
bcostm | 0:5d8241e6bd3b | 278 | /** |
bcostm | 0:5d8241e6bd3b | 279 | * @brief Updates the display from the data located into the RAM. |
bcostm | 0:5d8241e6bd3b | 280 | * @param None |
bcostm | 0:5d8241e6bd3b | 281 | * @retval None |
bcostm | 0:5d8241e6bd3b | 282 | */ |
bcostm | 0:5d8241e6bd3b | 283 | void EPD_GDE021A1::RefreshDisplay(void) |
bcostm | 0:5d8241e6bd3b | 284 | { |
bcostm | 0:5d8241e6bd3b | 285 | gde021a1_RefreshDisplay(); |
bcostm | 0:5d8241e6bd3b | 286 | |
bcostm | 0:5d8241e6bd3b | 287 | /* Poll on the BUSY signal and wait for the EPD to be ready */ |
bcostm | 0:5d8241e6bd3b | 288 | while (_bsy != 0); |
bcostm | 0:5d8241e6bd3b | 289 | |
bcostm | 0:5d8241e6bd3b | 290 | _rst = 1; |
bcostm | 0:5d8241e6bd3b | 291 | |
bcostm | 0:5d8241e6bd3b | 292 | wait_ms(10); |
bcostm | 0:5d8241e6bd3b | 293 | } |
bcostm | 0:5d8241e6bd3b | 294 | |
bcostm | 0:5d8241e6bd3b | 295 | //================================================================================================================= |
bcostm | 0:5d8241e6bd3b | 296 | // Private methods |
bcostm | 0:5d8241e6bd3b | 297 | //================================================================================================================= |
bcostm | 0:5d8241e6bd3b | 298 | |
bcostm | 0:5d8241e6bd3b | 299 | void EPD_GDE021A1::EPD_IO_WriteData(uint16_t RegValue) |
bcostm | 0:5d8241e6bd3b | 300 | { |
bcostm | 0:5d8241e6bd3b | 301 | _cs = 0; |
bcostm | 0:5d8241e6bd3b | 302 | _dc = 1; |
bcostm | 0:5d8241e6bd3b | 303 | _spi.write(RegValue); |
bcostm | 0:5d8241e6bd3b | 304 | _cs = 1; |
bcostm | 0:5d8241e6bd3b | 305 | } |
bcostm | 0:5d8241e6bd3b | 306 | |
bcostm | 0:5d8241e6bd3b | 307 | void EPD_GDE021A1::EPD_IO_WriteReg(uint8_t Reg) |
bcostm | 0:5d8241e6bd3b | 308 | { |
bcostm | 0:5d8241e6bd3b | 309 | _cs = 0; |
bcostm | 0:5d8241e6bd3b | 310 | _dc = 0; |
bcostm | 0:5d8241e6bd3b | 311 | _spi.write(Reg); |
bcostm | 0:5d8241e6bd3b | 312 | _cs = 1; |
bcostm | 0:5d8241e6bd3b | 313 | } |
bcostm | 0:5d8241e6bd3b | 314 | |
bcostm | 0:5d8241e6bd3b | 315 | uint16_t EPD_GDE021A1::EPD_IO_ReadData(void) |
bcostm | 0:5d8241e6bd3b | 316 | { |
bcostm | 0:5d8241e6bd3b | 317 | _cs = 0; |
bcostm | 0:5d8241e6bd3b | 318 | _cs = 1; |
bcostm | 0:5d8241e6bd3b | 319 | return _spi.write(0xFF); |
bcostm | 0:5d8241e6bd3b | 320 | } |
bcostm | 0:5d8241e6bd3b | 321 | |
bcostm | 0:5d8241e6bd3b | 322 | //================================================================================================================= |
bcostm | 0:5d8241e6bd3b | 323 | |
bcostm | 0:5d8241e6bd3b | 324 | /** |
bcostm | 0:5d8241e6bd3b | 325 | * @brief Initialize the GDE021A1 EPD Component. |
bcostm | 0:5d8241e6bd3b | 326 | * @param None |
bcostm | 0:5d8241e6bd3b | 327 | * @retval None |
bcostm | 0:5d8241e6bd3b | 328 | */ |
bcostm | 0:5d8241e6bd3b | 329 | void EPD_GDE021A1::gde021a1_Init(void) |
bcostm | 0:5d8241e6bd3b | 330 | { |
bcostm | 0:5d8241e6bd3b | 331 | uint8_t nb_bytes = 0; |
bcostm | 0:5d8241e6bd3b | 332 | |
bcostm | 0:5d8241e6bd3b | 333 | EPD_IO_WriteReg(EPD_REG_16); /* Deep sleep mode disable */ |
bcostm | 0:5d8241e6bd3b | 334 | EPD_IO_WriteData(0x00); |
bcostm | 0:5d8241e6bd3b | 335 | EPD_IO_WriteReg(EPD_REG_17); /* Data Entry Mode Setting */ |
bcostm | 0:5d8241e6bd3b | 336 | EPD_IO_WriteData(0x03); |
bcostm | 0:5d8241e6bd3b | 337 | EPD_IO_WriteReg(EPD_REG_68); /* Set the RAM X start/end address */ |
bcostm | 0:5d8241e6bd3b | 338 | EPD_IO_WriteData(0x00); /* RAM X address start = 00h */ |
bcostm | 0:5d8241e6bd3b | 339 | EPD_IO_WriteData(0x11); /* RAM X adress end = 11h (17 * 4pixels by address = 72 pixels) */ |
bcostm | 0:5d8241e6bd3b | 340 | EPD_IO_WriteReg(EPD_REG_69); /* Set the RAM Y start/end address */ |
bcostm | 0:5d8241e6bd3b | 341 | EPD_IO_WriteData(0x00); /* RAM Y address start = 0 */ |
bcostm | 0:5d8241e6bd3b | 342 | EPD_IO_WriteData(0xAB); /* RAM Y adress end = 171 */ |
bcostm | 0:5d8241e6bd3b | 343 | EPD_IO_WriteReg(EPD_REG_78); /* Set RAM X Address counter */ |
bcostm | 0:5d8241e6bd3b | 344 | EPD_IO_WriteData(0x00); |
bcostm | 0:5d8241e6bd3b | 345 | EPD_IO_WriteReg(EPD_REG_79); /* Set RAM Y Address counter */ |
bcostm | 0:5d8241e6bd3b | 346 | EPD_IO_WriteData(0x00); |
bcostm | 0:5d8241e6bd3b | 347 | EPD_IO_WriteReg(EPD_REG_240); /* Booster Set Internal Feedback Selection */ |
bcostm | 0:5d8241e6bd3b | 348 | EPD_IO_WriteData(0x1F); |
bcostm | 0:5d8241e6bd3b | 349 | EPD_IO_WriteReg(EPD_REG_33); /* Disable RAM bypass and set GS transition to GSA = GS0 and GSB = GS3 */ |
bcostm | 0:5d8241e6bd3b | 350 | EPD_IO_WriteData(0x03); |
bcostm | 0:5d8241e6bd3b | 351 | EPD_IO_WriteReg(EPD_REG_44); /* Write VCOMregister */ |
bcostm | 0:5d8241e6bd3b | 352 | EPD_IO_WriteData(0xA0); |
bcostm | 0:5d8241e6bd3b | 353 | EPD_IO_WriteReg(EPD_REG_60); /* Border waveform */ |
bcostm | 0:5d8241e6bd3b | 354 | EPD_IO_WriteData(0x64); |
bcostm | 0:5d8241e6bd3b | 355 | EPD_IO_WriteReg(EPD_REG_50); /* Write LUT register */ |
bcostm | 0:5d8241e6bd3b | 356 | |
bcostm | 0:5d8241e6bd3b | 357 | for (nb_bytes=0; nb_bytes<90; nb_bytes++) |
bcostm | 0:5d8241e6bd3b | 358 | { |
bcostm | 0:5d8241e6bd3b | 359 | EPD_IO_WriteData(WF_LUT[nb_bytes]); |
bcostm | 0:5d8241e6bd3b | 360 | } |
bcostm | 0:5d8241e6bd3b | 361 | } |
bcostm | 0:5d8241e6bd3b | 362 | |
bcostm | 0:5d8241e6bd3b | 363 | /** |
bcostm | 0:5d8241e6bd3b | 364 | * @brief Writes to the selected EPD register. |
bcostm | 0:5d8241e6bd3b | 365 | * @param EPD_Reg: Address of the selected register. |
bcostm | 0:5d8241e6bd3b | 366 | * @param EPD_RegValue: value to write to the selected register. |
bcostm | 0:5d8241e6bd3b | 367 | * @retval None |
bcostm | 0:5d8241e6bd3b | 368 | */ |
bcostm | 0:5d8241e6bd3b | 369 | void EPD_GDE021A1::gde021a1_WriteReg(uint8_t EPD_Reg, uint8_t EPD_RegValue) |
bcostm | 0:5d8241e6bd3b | 370 | { |
bcostm | 0:5d8241e6bd3b | 371 | EPD_IO_WriteReg(EPD_Reg); |
bcostm | 0:5d8241e6bd3b | 372 | |
bcostm | 0:5d8241e6bd3b | 373 | EPD_IO_WriteData(EPD_RegValue); |
bcostm | 0:5d8241e6bd3b | 374 | } |
bcostm | 0:5d8241e6bd3b | 375 | |
bcostm | 0:5d8241e6bd3b | 376 | /** |
bcostm | 0:5d8241e6bd3b | 377 | * @brief Reads the selected EPD Register. |
bcostm | 0:5d8241e6bd3b | 378 | * @param EPD_Reg: address of the selected register |
bcostm | 0:5d8241e6bd3b | 379 | * @retval EPD Register Value |
bcostm | 0:5d8241e6bd3b | 380 | */ |
bcostm | 0:5d8241e6bd3b | 381 | uint8_t EPD_GDE021A1::gde021a1_ReadReg(uint8_t EPD_Reg) |
bcostm | 0:5d8241e6bd3b | 382 | { |
bcostm | 0:5d8241e6bd3b | 383 | /* Write 8-bit Index (then Read Reg) */ |
bcostm | 0:5d8241e6bd3b | 384 | EPD_IO_WriteReg(EPD_Reg); |
bcostm | 0:5d8241e6bd3b | 385 | |
bcostm | 0:5d8241e6bd3b | 386 | /* Read 8-bit Reg */ |
bcostm | 0:5d8241e6bd3b | 387 | return (EPD_IO_ReadData()); |
bcostm | 0:5d8241e6bd3b | 388 | } |
bcostm | 0:5d8241e6bd3b | 389 | |
bcostm | 0:5d8241e6bd3b | 390 | /** |
bcostm | 0:5d8241e6bd3b | 391 | * @brief Writes 4 dots. |
bcostm | 0:5d8241e6bd3b | 392 | * @param HEX_Code: specifies the Data to write. |
bcostm | 0:5d8241e6bd3b | 393 | * @retval None |
bcostm | 0:5d8241e6bd3b | 394 | */ |
bcostm | 0:5d8241e6bd3b | 395 | void EPD_GDE021A1::gde021a1_WritePixel(uint8_t HEX_Code) |
bcostm | 0:5d8241e6bd3b | 396 | { |
bcostm | 0:5d8241e6bd3b | 397 | /* Prepare the register to write data on the RAM */ |
bcostm | 0:5d8241e6bd3b | 398 | EPD_IO_WriteReg(EPD_REG_36); |
bcostm | 0:5d8241e6bd3b | 399 | |
bcostm | 0:5d8241e6bd3b | 400 | /* Send the data to write */ |
bcostm | 0:5d8241e6bd3b | 401 | EPD_IO_WriteData(HEX_Code); |
bcostm | 0:5d8241e6bd3b | 402 | } |
bcostm | 0:5d8241e6bd3b | 403 | |
bcostm | 0:5d8241e6bd3b | 404 | /** |
bcostm | 0:5d8241e6bd3b | 405 | * @brief Displays picture.. |
bcostm | 0:5d8241e6bd3b | 406 | * @param pdata: picture address. |
bcostm | 0:5d8241e6bd3b | 407 | * @param Xpos: Image X position in the EPD |
bcostm | 0:5d8241e6bd3b | 408 | * @param Ypos: Image Y position in the EPD |
bcostm | 0:5d8241e6bd3b | 409 | * @param Xsize: Image X size in the EPD |
bcostm | 0:5d8241e6bd3b | 410 | * @note Xsize have to be a multiple of 4 |
bcostm | 0:5d8241e6bd3b | 411 | * @param Ysize: Image Y size in the EPD |
bcostm | 0:5d8241e6bd3b | 412 | * @retval None |
bcostm | 0:5d8241e6bd3b | 413 | */ |
bcostm | 0:5d8241e6bd3b | 414 | void EPD_GDE021A1::gde021a1_DrawImage(uint16_t Xpos, uint16_t Ypos, uint16_t Xsize, uint16_t Ysize, uint8_t *pdata) |
bcostm | 0:5d8241e6bd3b | 415 | { |
bcostm | 0:5d8241e6bd3b | 416 | uint32_t i, j = 0; |
bcostm | 0:5d8241e6bd3b | 417 | uint8_t pixels_4 = 0; |
bcostm | 0:5d8241e6bd3b | 418 | uint8_t pixels_4_grey[4] = {0}; |
bcostm | 0:5d8241e6bd3b | 419 | uint8_t nb_4_pixels, data_res = 0; |
bcostm | 0:5d8241e6bd3b | 420 | |
bcostm | 0:5d8241e6bd3b | 421 | /* Prepare the register to write data on the RAM */ |
bcostm | 0:5d8241e6bd3b | 422 | EPD_IO_WriteReg(EPD_REG_36); |
bcostm | 0:5d8241e6bd3b | 423 | |
bcostm | 0:5d8241e6bd3b | 424 | /* X size is a multiple of 8 */ |
bcostm | 0:5d8241e6bd3b | 425 | if ((Xsize % 8) == 0) |
bcostm | 0:5d8241e6bd3b | 426 | { |
bcostm | 0:5d8241e6bd3b | 427 | for (i= 0; i< ((((Ysize) * (Xsize/4)))/2) ; i++) |
bcostm | 0:5d8241e6bd3b | 428 | { |
bcostm | 0:5d8241e6bd3b | 429 | /* Get the current data */ |
bcostm | 0:5d8241e6bd3b | 430 | pixels_4 = pdata[i]; |
bcostm | 0:5d8241e6bd3b | 431 | if (pixels_4 !=0) |
bcostm | 0:5d8241e6bd3b | 432 | { |
bcostm | 0:5d8241e6bd3b | 433 | /* One byte read codes 8 pixels in 1-bit bitmap */ |
bcostm | 0:5d8241e6bd3b | 434 | for (nb_4_pixels = 0; nb_4_pixels < 2; nb_4_pixels++) |
bcostm | 0:5d8241e6bd3b | 435 | { |
bcostm | 0:5d8241e6bd3b | 436 | /* Processing 8 pixels */ |
bcostm | 0:5d8241e6bd3b | 437 | /* Preparing the 4 pixels coded with 4 grey level per pixel |
bcostm | 0:5d8241e6bd3b | 438 | from a monochrome xbm file */ |
bcostm | 0:5d8241e6bd3b | 439 | for (j= 0; j<4; j++) |
bcostm | 0:5d8241e6bd3b | 440 | { |
bcostm | 0:5d8241e6bd3b | 441 | if (((pixels_4) & 0x01) == 1) |
bcostm | 0:5d8241e6bd3b | 442 | { |
bcostm | 0:5d8241e6bd3b | 443 | /* Two LSB is coding black in 4 grey level */ |
bcostm | 0:5d8241e6bd3b | 444 | pixels_4_grey[j] &= 0xFC; |
bcostm | 0:5d8241e6bd3b | 445 | } |
bcostm | 0:5d8241e6bd3b | 446 | else |
bcostm | 0:5d8241e6bd3b | 447 | { |
bcostm | 0:5d8241e6bd3b | 448 | /* Two LSB is coded white in 4 grey level */ |
bcostm | 0:5d8241e6bd3b | 449 | pixels_4_grey[j] |= 0x03; |
bcostm | 0:5d8241e6bd3b | 450 | } |
bcostm | 0:5d8241e6bd3b | 451 | pixels_4 = pixels_4 >> 1; |
bcostm | 0:5d8241e6bd3b | 452 | } |
bcostm | 0:5d8241e6bd3b | 453 | |
bcostm | 0:5d8241e6bd3b | 454 | /* Processing 4 pixels */ |
bcostm | 0:5d8241e6bd3b | 455 | /* Format the data to have the Lower pixel number sent on the MSB for the SPI to fit with the RAM |
bcostm | 0:5d8241e6bd3b | 456 | EPD topology */ |
bcostm | 0:5d8241e6bd3b | 457 | data_res = pixels_4_grey[0] << 6 | pixels_4_grey[1] << 4 | pixels_4_grey[2] << 2 | pixels_4_grey[3] << 0; |
bcostm | 0:5d8241e6bd3b | 458 | |
bcostm | 0:5d8241e6bd3b | 459 | /* Send the data to the EPD's RAM through SPI */ |
bcostm | 0:5d8241e6bd3b | 460 | EPD_IO_WriteData(data_res); |
bcostm | 0:5d8241e6bd3b | 461 | } |
bcostm | 0:5d8241e6bd3b | 462 | } |
bcostm | 0:5d8241e6bd3b | 463 | else |
bcostm | 0:5d8241e6bd3b | 464 | { |
bcostm | 0:5d8241e6bd3b | 465 | /* 1 byte read from xbm files is equivalent to 8 pixels in the |
bcostm | 0:5d8241e6bd3b | 466 | other words 2 bytes to be transferred */ |
bcostm | 0:5d8241e6bd3b | 467 | EPD_IO_WriteData(0xFF); |
bcostm | 0:5d8241e6bd3b | 468 | EPD_IO_WriteData(0xFF); |
bcostm | 0:5d8241e6bd3b | 469 | } |
bcostm | 0:5d8241e6bd3b | 470 | } |
bcostm | 0:5d8241e6bd3b | 471 | } |
bcostm | 0:5d8241e6bd3b | 472 | |
bcostm | 0:5d8241e6bd3b | 473 | /* X size is a multiple of 4 */ |
bcostm | 0:5d8241e6bd3b | 474 | else |
bcostm | 0:5d8241e6bd3b | 475 | { |
bcostm | 0:5d8241e6bd3b | 476 | for (i= 0; i< ((((Ysize) * ((Xsize/4)+1))/2)) ; i++) |
bcostm | 0:5d8241e6bd3b | 477 | { |
bcostm | 0:5d8241e6bd3b | 478 | /* Get the current data */ |
bcostm | 0:5d8241e6bd3b | 479 | pixels_4 = pdata[i]; |
bcostm | 0:5d8241e6bd3b | 480 | if (((i+1) % (((Xsize/4)+1)/2)) != 0) |
bcostm | 0:5d8241e6bd3b | 481 | { |
bcostm | 0:5d8241e6bd3b | 482 | if (pixels_4 !=0) |
bcostm | 0:5d8241e6bd3b | 483 | { |
bcostm | 0:5d8241e6bd3b | 484 | /* One byte read codes 8 pixels in 1-bit bitmap */ |
bcostm | 0:5d8241e6bd3b | 485 | for (nb_4_pixels = 0; nb_4_pixels < 2; nb_4_pixels++) |
bcostm | 0:5d8241e6bd3b | 486 | { |
bcostm | 0:5d8241e6bd3b | 487 | /* Processing 8 pixels */ |
bcostm | 0:5d8241e6bd3b | 488 | /* Preparing the 4 pixels coded with 4 grey level per pixel |
bcostm | 0:5d8241e6bd3b | 489 | from a monochrome xbm file */ |
bcostm | 0:5d8241e6bd3b | 490 | for (j= 0; j<4; j++) |
bcostm | 0:5d8241e6bd3b | 491 | { |
bcostm | 0:5d8241e6bd3b | 492 | if (((pixels_4) & 0x01) == 1) |
bcostm | 0:5d8241e6bd3b | 493 | { |
bcostm | 0:5d8241e6bd3b | 494 | /* Two LSB is coding black in 4 grey level */ |
bcostm | 0:5d8241e6bd3b | 495 | pixels_4_grey[j] &= 0xFC; |
bcostm | 0:5d8241e6bd3b | 496 | } |
bcostm | 0:5d8241e6bd3b | 497 | else |
bcostm | 0:5d8241e6bd3b | 498 | { |
bcostm | 0:5d8241e6bd3b | 499 | /* Two LSB is coded white in 4 grey level */ |
bcostm | 0:5d8241e6bd3b | 500 | pixels_4_grey[j] |= 0x03; |
bcostm | 0:5d8241e6bd3b | 501 | } |
bcostm | 0:5d8241e6bd3b | 502 | pixels_4 = pixels_4 >> 1; |
bcostm | 0:5d8241e6bd3b | 503 | } |
bcostm | 0:5d8241e6bd3b | 504 | |
bcostm | 0:5d8241e6bd3b | 505 | /* Processing 4 pixels */ |
bcostm | 0:5d8241e6bd3b | 506 | /* Format the data to have the Lower pixel number sent on the MSB for the SPI to fit with the RAM |
bcostm | 0:5d8241e6bd3b | 507 | EPD topology */ |
bcostm | 0:5d8241e6bd3b | 508 | data_res = pixels_4_grey[0] << 6 | pixels_4_grey[1] << 4 | pixels_4_grey[2] << 2 | pixels_4_grey[3] << 0; |
bcostm | 0:5d8241e6bd3b | 509 | |
bcostm | 0:5d8241e6bd3b | 510 | /* Send the data to the EPD's RAM through SPI */ |
bcostm | 0:5d8241e6bd3b | 511 | EPD_IO_WriteData(data_res); |
bcostm | 0:5d8241e6bd3b | 512 | } |
bcostm | 0:5d8241e6bd3b | 513 | } |
bcostm | 0:5d8241e6bd3b | 514 | else if (pixels_4 == 0) |
bcostm | 0:5d8241e6bd3b | 515 | { |
bcostm | 0:5d8241e6bd3b | 516 | /* One byte read from xbm files is equivalent to 8 pixels in the |
bcostm | 0:5d8241e6bd3b | 517 | other words Two bytes to be transferred */ |
bcostm | 0:5d8241e6bd3b | 518 | EPD_IO_WriteData(0xFF); |
bcostm | 0:5d8241e6bd3b | 519 | EPD_IO_WriteData(0xFF); |
bcostm | 0:5d8241e6bd3b | 520 | } |
bcostm | 0:5d8241e6bd3b | 521 | } |
bcostm | 0:5d8241e6bd3b | 522 | |
bcostm | 0:5d8241e6bd3b | 523 | else if (((i+1) % (((Xsize/4)+1)/2)) == 0) |
bcostm | 0:5d8241e6bd3b | 524 | { |
bcostm | 0:5d8241e6bd3b | 525 | if (pixels_4 !=0xf0) |
bcostm | 0:5d8241e6bd3b | 526 | { |
bcostm | 0:5d8241e6bd3b | 527 | /* Processing 8 pixels */ |
bcostm | 0:5d8241e6bd3b | 528 | /* Preparing the 4 pixels coded with 4 grey level per pixel |
bcostm | 0:5d8241e6bd3b | 529 | from a monochrome xbm file */ |
bcostm | 0:5d8241e6bd3b | 530 | for (j= 0; j<4; j++) |
bcostm | 0:5d8241e6bd3b | 531 | { |
bcostm | 0:5d8241e6bd3b | 532 | if (((pixels_4) & 0x01) == 1) |
bcostm | 0:5d8241e6bd3b | 533 | { |
bcostm | 0:5d8241e6bd3b | 534 | /* 2 LSB is coding black in 4 grey level */ |
bcostm | 0:5d8241e6bd3b | 535 | pixels_4_grey[j] &= 0xFC; |
bcostm | 0:5d8241e6bd3b | 536 | } |
bcostm | 0:5d8241e6bd3b | 537 | else |
bcostm | 0:5d8241e6bd3b | 538 | { |
bcostm | 0:5d8241e6bd3b | 539 | /* 2 LSB is coded white in 4 grey level */ |
bcostm | 0:5d8241e6bd3b | 540 | pixels_4_grey[j] |= 0x03; |
bcostm | 0:5d8241e6bd3b | 541 | } |
bcostm | 0:5d8241e6bd3b | 542 | pixels_4 = pixels_4 >> 1; |
bcostm | 0:5d8241e6bd3b | 543 | } |
bcostm | 0:5d8241e6bd3b | 544 | |
bcostm | 0:5d8241e6bd3b | 545 | /* Processing 4 pixels */ |
bcostm | 0:5d8241e6bd3b | 546 | /* Format the data to have the Lower pixel number sent on the MSB for the SPI to fit with the RAM |
bcostm | 0:5d8241e6bd3b | 547 | EPD topology */ |
bcostm | 0:5d8241e6bd3b | 548 | data_res = pixels_4_grey[0] << 6 | pixels_4_grey[1] << 4 | pixels_4_grey[2] << 2 | pixels_4_grey[3] << 0; |
bcostm | 0:5d8241e6bd3b | 549 | |
bcostm | 0:5d8241e6bd3b | 550 | /* Send the data to the EPD's RAM through SPI */ |
bcostm | 0:5d8241e6bd3b | 551 | EPD_IO_WriteData(data_res); |
bcostm | 0:5d8241e6bd3b | 552 | } |
bcostm | 0:5d8241e6bd3b | 553 | else if (pixels_4 == 0xf0) |
bcostm | 0:5d8241e6bd3b | 554 | { |
bcostm | 0:5d8241e6bd3b | 555 | /* One byte to be transferred */ |
bcostm | 0:5d8241e6bd3b | 556 | EPD_IO_WriteData(0xFF); |
bcostm | 0:5d8241e6bd3b | 557 | } |
bcostm | 0:5d8241e6bd3b | 558 | } |
bcostm | 0:5d8241e6bd3b | 559 | } |
bcostm | 0:5d8241e6bd3b | 560 | } |
bcostm | 0:5d8241e6bd3b | 561 | } |
bcostm | 0:5d8241e6bd3b | 562 | |
bcostm | 0:5d8241e6bd3b | 563 | /** |
bcostm | 0:5d8241e6bd3b | 564 | * @brief Activates display update sequence. |
bcostm | 0:5d8241e6bd3b | 565 | * @param None |
bcostm | 0:5d8241e6bd3b | 566 | * @retval None |
bcostm | 0:5d8241e6bd3b | 567 | */ |
bcostm | 0:5d8241e6bd3b | 568 | void EPD_GDE021A1::gde021a1_RefreshDisplay(void) |
bcostm | 0:5d8241e6bd3b | 569 | { |
bcostm | 0:5d8241e6bd3b | 570 | /* Write on the Display update control register */ |
bcostm | 0:5d8241e6bd3b | 571 | EPD_IO_WriteReg(EPD_REG_34); |
bcostm | 0:5d8241e6bd3b | 572 | |
bcostm | 0:5d8241e6bd3b | 573 | /* Display update data sequence option */ |
bcostm | 0:5d8241e6bd3b | 574 | EPD_IO_WriteData(0xC4); |
bcostm | 0:5d8241e6bd3b | 575 | |
bcostm | 0:5d8241e6bd3b | 576 | /* Launching the update: Nothing should interrupt this sequence in order |
bcostm | 0:5d8241e6bd3b | 577 | to avoid display corruption */ |
bcostm | 0:5d8241e6bd3b | 578 | EPD_IO_WriteReg(EPD_REG_32); |
bcostm | 0:5d8241e6bd3b | 579 | } |
bcostm | 0:5d8241e6bd3b | 580 | |
bcostm | 0:5d8241e6bd3b | 581 | /** |
bcostm | 0:5d8241e6bd3b | 582 | * @brief Disables the clock and the charge pump. |
bcostm | 0:5d8241e6bd3b | 583 | * @param None |
bcostm | 0:5d8241e6bd3b | 584 | * @retval None |
bcostm | 0:5d8241e6bd3b | 585 | */ |
bcostm | 0:5d8241e6bd3b | 586 | void EPD_GDE021A1::gde021a1_CloseChargePump(void) |
bcostm | 0:5d8241e6bd3b | 587 | { |
bcostm | 0:5d8241e6bd3b | 588 | /* Write on the Display update control register */ |
bcostm | 0:5d8241e6bd3b | 589 | EPD_IO_WriteReg(EPD_REG_34); |
bcostm | 0:5d8241e6bd3b | 590 | |
bcostm | 0:5d8241e6bd3b | 591 | /* Disable CP then Disable Clock signal */ |
bcostm | 0:5d8241e6bd3b | 592 | EPD_IO_WriteData(0x03); |
bcostm | 0:5d8241e6bd3b | 593 | |
bcostm | 0:5d8241e6bd3b | 594 | /* Launching the update: Nothing should interrupt this sequence in order |
bcostm | 0:5d8241e6bd3b | 595 | to avoid display corruption */ |
bcostm | 0:5d8241e6bd3b | 596 | EPD_IO_WriteReg(EPD_REG_32); |
bcostm | 0:5d8241e6bd3b | 597 | } |
bcostm | 0:5d8241e6bd3b | 598 | |
bcostm | 0:5d8241e6bd3b | 599 | /** |
bcostm | 0:5d8241e6bd3b | 600 | * @brief Sets a display window. |
bcostm | 0:5d8241e6bd3b | 601 | * @param Xpos: specifies the X bottom left position. |
bcostm | 0:5d8241e6bd3b | 602 | * @param Ypos: specifies the Y bottom left position. |
bcostm | 0:5d8241e6bd3b | 603 | * @param Width: display window width. |
bcostm | 0:5d8241e6bd3b | 604 | * @param Height: display window height. |
bcostm | 0:5d8241e6bd3b | 605 | * @retval None |
bcostm | 0:5d8241e6bd3b | 606 | */ |
bcostm | 0:5d8241e6bd3b | 607 | void EPD_GDE021A1::gde021a1_SetDisplayWindow(uint16_t Xpos, uint16_t Ypos, uint16_t Width, uint16_t Height) |
bcostm | 0:5d8241e6bd3b | 608 | { |
bcostm | 0:5d8241e6bd3b | 609 | /* Set Y position and the height */ |
bcostm | 0:5d8241e6bd3b | 610 | EPD_IO_WriteReg(EPD_REG_68); |
bcostm | 0:5d8241e6bd3b | 611 | EPD_IO_WriteData(Ypos); |
bcostm | 0:5d8241e6bd3b | 612 | EPD_IO_WriteData(Height); |
bcostm | 0:5d8241e6bd3b | 613 | /* Set X position and the width */ |
bcostm | 0:5d8241e6bd3b | 614 | EPD_IO_WriteReg(EPD_REG_69); |
bcostm | 0:5d8241e6bd3b | 615 | EPD_IO_WriteData(Xpos); |
bcostm | 0:5d8241e6bd3b | 616 | EPD_IO_WriteData(Width); |
bcostm | 0:5d8241e6bd3b | 617 | /* Set the height counter */ |
bcostm | 0:5d8241e6bd3b | 618 | EPD_IO_WriteReg(EPD_REG_78); |
bcostm | 0:5d8241e6bd3b | 619 | EPD_IO_WriteData(Ypos); |
bcostm | 0:5d8241e6bd3b | 620 | /* Set the width counter */ |
bcostm | 0:5d8241e6bd3b | 621 | EPD_IO_WriteReg(EPD_REG_79); |
bcostm | 0:5d8241e6bd3b | 622 | EPD_IO_WriteData(Xpos); |
bcostm | 0:5d8241e6bd3b | 623 | } |
bcostm | 0:5d8241e6bd3b | 624 | |
bcostm | 0:5d8241e6bd3b | 625 | /** |
bcostm | 0:5d8241e6bd3b | 626 | * @brief Gets the EPD pixel Width. |
bcostm | 0:5d8241e6bd3b | 627 | * @param None |
bcostm | 0:5d8241e6bd3b | 628 | * @retval The EPD Pixel Width |
bcostm | 0:5d8241e6bd3b | 629 | */ |
bcostm | 0:5d8241e6bd3b | 630 | uint16_t EPD_GDE021A1::gde021a1_GetEpdPixelWidth(void) |
bcostm | 0:5d8241e6bd3b | 631 | { |
bcostm | 0:5d8241e6bd3b | 632 | return GDE021A1_EPD_PIXEL_WIDTH; |
bcostm | 0:5d8241e6bd3b | 633 | } |
bcostm | 0:5d8241e6bd3b | 634 | |
bcostm | 0:5d8241e6bd3b | 635 | /** |
bcostm | 0:5d8241e6bd3b | 636 | * @brief Gets the EPD pixel Height. |
bcostm | 0:5d8241e6bd3b | 637 | * @param None |
bcostm | 0:5d8241e6bd3b | 638 | * @retval The EPD Pixel Height |
bcostm | 0:5d8241e6bd3b | 639 | */ |
bcostm | 0:5d8241e6bd3b | 640 | uint16_t EPD_GDE021A1::gde021a1_GetEpdPixelHeight(void) |
bcostm | 0:5d8241e6bd3b | 641 | { |
bcostm | 0:5d8241e6bd3b | 642 | return GDE021A1_EPD_PIXEL_HEIGHT; |
bcostm | 0:5d8241e6bd3b | 643 | } |
bcostm | 0:5d8241e6bd3b | 644 | |
bcostm | 0:5d8241e6bd3b | 645 | /** |
bcostm | 0:5d8241e6bd3b | 646 | * @brief Draws a character on EPD. |
bcostm | 0:5d8241e6bd3b | 647 | * @param Xpos: specifies the X position, can be a value from 0 to 171 |
bcostm | 0:5d8241e6bd3b | 648 | * @param Ypos: specifies the Y position, can be a value from 0 to 17 |
bcostm | 0:5d8241e6bd3b | 649 | * @param c: pointer to the character data |
bcostm | 0:5d8241e6bd3b | 650 | * @retval None |
bcostm | 0:5d8241e6bd3b | 651 | */ |
bcostm | 0:5d8241e6bd3b | 652 | void EPD_GDE021A1::DrawChar(uint16_t Xpos, uint16_t Ypos, const uint8_t *c) |
bcostm | 0:5d8241e6bd3b | 653 | { |
bcostm | 0:5d8241e6bd3b | 654 | uint32_t index = 0; |
bcostm | 0:5d8241e6bd3b | 655 | uint32_t data_length = 0; |
bcostm | 0:5d8241e6bd3b | 656 | uint16_t height = 0; |
bcostm | 0:5d8241e6bd3b | 657 | uint16_t width = 0; |
bcostm | 0:5d8241e6bd3b | 658 | |
bcostm | 0:5d8241e6bd3b | 659 | width = pFont->Width; |
bcostm | 0:5d8241e6bd3b | 660 | height = pFont->Height; |
bcostm | 0:5d8241e6bd3b | 661 | |
bcostm | 0:5d8241e6bd3b | 662 | /* Set the Character display window */ |
bcostm | 0:5d8241e6bd3b | 663 | gde021a1_SetDisplayWindow(Xpos, Ypos, (Xpos + width - 1), (Ypos + height - 1)); |
bcostm | 0:5d8241e6bd3b | 664 | |
bcostm | 0:5d8241e6bd3b | 665 | data_length = (height * width); |
bcostm | 0:5d8241e6bd3b | 666 | |
bcostm | 0:5d8241e6bd3b | 667 | for(index = 0; index < data_length; index++) |
bcostm | 0:5d8241e6bd3b | 668 | { |
bcostm | 0:5d8241e6bd3b | 669 | gde021a1_WritePixel(c[index]); |
bcostm | 0:5d8241e6bd3b | 670 | } |
bcostm | 0:5d8241e6bd3b | 671 | } |