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Added built-in display bringup for Badger2040
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‎ports/raspberrypi/boards/pimoroni_badger2040/board.c

Lines changed: 286 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -26,7 +26,284 @@
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#include "supervisor/board.h"
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#include "mpconfigboard.h"
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#include "shared-bindings/busio/SPI.h"
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#include "shared-bindings/displayio/FourWire.h"
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#include "shared-bindings/microcontroller/Pin.h"
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#include "shared-module/displayio/__init__.h"
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#include "supervisor/shared/board.h"
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#define DELAY 0x80
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enum reg {
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PSR = 0x00,
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PWR = 0x01,
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POF = 0x02,
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PFS = 0x03,
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PON = 0x04,
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PMES = 0x05,
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BTST = 0x06,
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DSLP = 0x07,
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DTM1 = 0x10,
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DSP = 0x11,
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DRF = 0x12,
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DTM2 = 0x13,
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LUT_VCOM = 0x20,
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LUT_WW = 0x21,
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LUT_BW = 0x22,
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LUT_WB = 0x23,
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LUT_BB = 0x24,
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PLL = 0x30,
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TSC = 0x40,
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TSE = 0x41,
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TSR = 0x43,
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TSW = 0x42,
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CDI = 0x50,
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LPD = 0x51,
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TCON = 0x60,
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TRES = 0x61,
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REV = 0x70,
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FLG = 0x71,
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AMV = 0x80,
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VV = 0x81,
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VDCS = 0x82,
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PTL = 0x90,
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PTIN = 0x91,
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PTOU = 0x92,
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PGM = 0xa0,
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APG = 0xa1,
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ROTP = 0xa2,
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CCSET = 0xe0,
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PWS = 0xe3,
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TSSET = 0xe5
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};
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enum PSR_FLAGS {
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RES_96x230 = 0b00000000,
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RES_96x252 = 0b01000000,
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RES_128x296 = 0b10000000,
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RES_160x296 = 0b11000000,
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LUT_OTP = 0b00000000,
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LUT_REG = 0b00100000,
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FORMAT_BWR = 0b00000000,
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FORMAT_BW = 0b00010000,
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SCAN_DOWN = 0b00000000,
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SCAN_UP = 0b00001000,
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SHIFT_LEFT = 0b00000000,
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SHIFT_RIGHT = 0b00000100,
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BOOSTER_OFF = 0b00000000,
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BOOSTER_ON = 0b00000010,
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RESET_SOFT = 0b00000000,
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RESET_NONE = 0b00000001
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};
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enum PWR_FLAGS_1 {
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VDS_EXTERNAL = 0b00000000,
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VDS_INTERNAL = 0b00000010,
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VDG_EXTERNAL = 0b00000000,
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VDG_INTERNAL = 0b00000001
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};
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enum PWR_FLAGS_2 {
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VCOM_VD = 0b00000000,
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VCOM_VG = 0b00000100,
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VGHL_16V = 0b00000000,
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VGHL_15V = 0b00000001,
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VGHL_14V = 0b00000010,
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VGHL_13V = 0b00000011
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};
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enum BOOSTER_FLAGS {
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START_10MS = 0b00000000,
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START_20MS = 0b01000000,
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START_30MS = 0b10000000,
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START_40MS = 0b11000000,
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STRENGTH_1 = 0b00000000,
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STRENGTH_2 = 0b00001000,
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STRENGTH_3 = 0b00010000,
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STRENGTH_4 = 0b00011000,
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STRENGTH_5 = 0b00100000,
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STRENGTH_6 = 0b00101000,
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STRENGTH_7 = 0b00110000,
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STRENGTH_8 = 0b00111000,
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OFF_0_27US = 0b00000000,
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OFF_0_34US = 0b00000001,
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OFF_0_40US = 0b00000010,
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OFF_0_54US = 0b00000011,
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OFF_0_80US = 0b00000100,
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OFF_1_54US = 0b00000101,
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OFF_3_34US = 0b00000110,
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OFF_6_58US = 0b00000111
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};
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enum PFS_FLAGS {
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FRAMES_1 = 0b00000000,
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FRAMES_2 = 0b00010000,
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FRAMES_3 = 0b00100000,
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FRAMES_4 = 0b00110000
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};
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enum TSE_FLAGS {
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TEMP_INTERNAL = 0b00000000,
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TEMP_EXTERNAL = 0b10000000,
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OFFSET_0 = 0b00000000,
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OFFSET_1 = 0b00000001,
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OFFSET_2 = 0b00000010,
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OFFSET_3 = 0b00000011,
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OFFSET_4 = 0b00000100,
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OFFSET_5 = 0b00000101,
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OFFSET_6 = 0b00000110,
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OFFSET_7 = 0b00000111,
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OFFSET_MIN_8 = 0b00001000,
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OFFSET_MIN_7 = 0b00001001,
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OFFSET_MIN_6 = 0b00001010,
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OFFSET_MIN_5 = 0b00001011,
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OFFSET_MIN_4 = 0b00001100,
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OFFSET_MIN_3 = 0b00001101,
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OFFSET_MIN_2 = 0b00001110,
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OFFSET_MIN_1 = 0b00001111
177+
};
178+
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enum PLL_FLAGS {
180+
// other frequency options exist but there doesn't seem to be much
181+
// point in including them - this is a fair range of options...
182+
HZ_29 = 0b00111111,
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HZ_33 = 0b00111110,
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HZ_40 = 0b00111101,
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HZ_50 = 0b00111100,
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HZ_67 = 0b00111011,
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HZ_100 = 0b00111010,
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HZ_200 = 0b00111001
189+
};
190+
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// This is an UC8151 control chip. The display is a 2.9" grayscale EInk.
192+
const uint8_t display_start_sequence[] = {
193+
PWR, 5, VDS_INTERNAL | VDG_INTERNAL, VCOM_VD | VGHL_16V, 0b101011, 0b101011, 0b101011, // power setting
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PON, DELAY, 200, // power on and wait 200 ms
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BTST, 3, (START_10MS | STRENGTH_3 | OFF_6_58US), (START_10MS | STRENGTH_3 | OFF_6_58US), (START_10MS | STRENGTH_3 | OFF_6_58US),
196+
PSR, 1, (RES_128x296 | LUT_REG | FORMAT_BW | SCAN_UP | SHIFT_RIGHT | BOOSTER_ON | RESET_NONE),
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PFS, 1, FRAMES_1,
198+
TSE, 1, TEMP_INTERNAL | OFFSET_0,
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TCON, 1, 0x22, // tcon setting
200+
CDI, 1, 0b01001100, // vcom and data interval
201+
PLL, 1, HZ_100, // PLL set to 100 Hz
202+
203+
// Look up tables for voltage sequence for pixel transition
204+
// Common voltage
205+
LUT_VCOM, 44,
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0x00, 0x16, 0x16, 0x0d, 0x00, 0x01,
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0x00, 0x23, 0x23, 0x00, 0x00, 0x02,
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0x00, 0x16, 0x16, 0x0d, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00,
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// White to white
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LUT_WW, 42,
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0x54, 0x16, 0x16, 0x0d, 0x00, 0x01,
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0x60, 0x23, 0x23, 0x00, 0x00, 0x02,
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0xa8, 0x16, 0x16, 0x0d, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
224+
225+
// Black to white
226+
LUT_BW, 42,
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0x54, 0x16, 0x16, 0x0d, 0x00, 0x01,
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0x60, 0x23, 0x23, 0x00, 0x00, 0x02,
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0xa8, 0x16, 0x16, 0x0d, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
234+
235+
// White to black
236+
LUT_WB, 42,
237+
0xa8, 0x16, 0x16, 0x0d, 0x00, 0x01,
238+
0x60, 0x23, 0x23, 0x00, 0x00, 0x02,
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0x54, 0x16, 0x16, 0x0d, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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245+
// Black to black
246+
LUT_BB, 42,
247+
0xa8, 0x16, 0x16, 0x0d, 0x00, 0x01,
248+
0x60, 0x23, 0x23, 0x00, 0x00, 0x02,
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0x54, 0x16, 0x16, 0x0d, 0x00, 0x01,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
252+
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
253+
0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
254+
};
255+
256+
const uint8_t display_stop_sequence[] = {
257+
POF, 0x00 // Power off
258+
};
259+
29260
void board_init(void) {
261+
busio_spi_obj_t *spi = &displays[0].fourwire_bus.inline_bus;
262+
common_hal_busio_spi_construct(spi, &pin_GPIO18, &pin_GPIO19, &pin_GPIO16, false);
263+
common_hal_busio_spi_never_reset(spi);
264+
265+
displayio_fourwire_obj_t *bus = &displays[0].fourwire_bus;
266+
bus->base.type = &displayio_fourwire_type;
267+
common_hal_displayio_fourwire_construct(bus,
268+
spi,
269+
&pin_GPIO20, // EPD_DC Command or data
270+
&pin_GPIO17, // EPD_CS Chip select
271+
&pin_GPIO21, // EPD_RST Reset
272+
1200000, // Baudrate
273+
0, // Polarity
274+
0); // Phase
275+
276+
displayio_epaperdisplay_obj_t *display = &displays[0].epaper_display;
277+
display->base.type = &displayio_epaperdisplay_type;
278+
common_hal_displayio_epaperdisplay_construct(
279+
display,
280+
bus,
281+
display_start_sequence, sizeof(display_start_sequence),
282+
display_stop_sequence, sizeof(display_stop_sequence),
283+
296, // width
284+
128, // height
285+
160, // ram_width
286+
296, // ram_height
287+
0, // colstart
288+
0, // rowstart
289+
270, // rotation
290+
NO_COMMAND, // set_column_window_command
291+
NO_COMMAND, // set_row_window_command
292+
NO_COMMAND, // set_current_column_command
293+
NO_COMMAND, // set_current_row_command
294+
DTM2, // write_black_ram_command
295+
false, // black_bits_inverted
296+
DTM1, // write_color_ram_command
297+
false, // color_bits_inverted
298+
0x000000, // highlight_color
299+
DRF, // refresh_display_command
300+
1.0, // refresh_time
301+
&pin_GPIO26, // busy_pin
302+
false, // busy_state
303+
2.0, // seconds_per_frame
304+
false, // always_toggle_chip_select
305+
false, // grayscale
306+
false); // two_byte_sequence_length
30307
}
31308

32309
bool board_requests_safe_mode(void) {
@@ -37,4 +314,13 @@ void reset_board(void) {
37314
}
38315

39316
void board_deinit(void) {
317+
displayio_epaperdisplay_obj_t *display = &displays[0].epaper_display;
318+
if (display->base.type == &displayio_epaperdisplay_type) {
319+
size_t i = 0;
320+
while (common_hal_displayio_epaperdisplay_get_busy(display)) {
321+
RUN_BACKGROUND_TASKS;
322+
i++;
323+
}
324+
}
325+
common_hal_displayio_release_displays();
40326
}

‎ports/raspberrypi/boards/pimoroni_badger2040/mpconfigboard.h

Lines changed: 13 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -1,2 +1,15 @@
11
#define MICROPY_HW_BOARD_NAME "Pimoroni Badger 2040"
22
#define MICROPY_HW_MCU_NAME "rp2040"
3+
4+
// Status LED
5+
#define MICROPY_HW_LED_STATUS (&pin_GPIO25)
6+
7+
#define DEFAULT_UART_BUS_TX (&pin_GPIO0)
8+
#define DEFAULT_UART_BUS_RX (&pin_GPIO1)
9+
10+
#define DEFAULT_I2C_BUS_SDA (&pin_GPIO4)
11+
#define DEFAULT_I2C_BUS_SCL (&pin_GPIO5)
12+
13+
#define DEFAULT_SPI_BUS_SCK (&pin_GPIO18)
14+
#define DEFAULT_SPI_BUS_MOSI (&pin_GPIO19)
15+
#define DEFAULT_SPI_BUS_MISO (&pin_GPIO16)

‎ports/raspberrypi/boards/pimoroni_badger2040/pins.c

Lines changed: 6 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -1,5 +1,7 @@
11
#include "shared-bindings/board/__init__.h"
22

3+
#include "shared-module/displayio/__init__.h"
4+
35
STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
46
CIRCUITPYTHON_BOARD_DICT_STANDARD_ITEMS
57

@@ -23,7 +25,7 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
2325

2426
{ MP_ROM_QSTR(MP_QSTR_MISO), MP_ROM_PTR(&pin_GPIO16) },
2527
{ MP_ROM_QSTR(MP_QSTR_INKY_CS), MP_ROM_PTR(&pin_GPIO17) },
26-
{ MP_ROM_QSTR(MP_QSTR_SCLK), MP_ROM_PTR(&pin_GPIO18) },
28+
{ MP_ROM_QSTR(MP_QSTR_SCK), MP_ROM_PTR(&pin_GPIO18) },
2729
{ MP_ROM_QSTR(MP_QSTR_MOSI), MP_ROM_PTR(&pin_GPIO19) },
2830
{ MP_ROM_QSTR(MP_QSTR_INKY_DC), MP_ROM_PTR(&pin_GPIO20) },
2931
{ MP_ROM_QSTR(MP_QSTR_INKY_RST), MP_ROM_PTR(&pin_GPIO21) },
@@ -39,6 +41,8 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
3941

4042
{ MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
4143
{ MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&board_spi_obj) },
42-
{ MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&board_uart_obj) }
44+
{ MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&board_uart_obj) },
45+
46+
{ MP_ROM_QSTR(MP_QSTR_DISPLAY), MP_ROM_PTR(&displays[0].epaper_display)},
4347
};
4448
MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);

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