569 lines
14 KiB
C++
569 lines
14 KiB
C++
#include "uc8151_legacy.hpp"
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#include <cstdlib>
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#include <math.h>
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namespace pimoroni {
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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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bool UC8151_Legacy::is_busy() {
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return !gpio_get(BUSY);
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}
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void UC8151_Legacy::busy_wait() {
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while(is_busy()) {
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tight_loop_contents();
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}
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}
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void UC8151_Legacy::reset() {
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gpio_put(RESET, 0); sleep_ms(10);
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gpio_put(RESET, 1); sleep_ms(10);
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busy_wait();
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}
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void UC8151_Legacy::default_luts() {
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command(LUT_VCOM, {
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0x00, 0x64, 0x64, 0x37, 0x00, 0x01,
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0x00, 0x8c, 0x8c, 0x00, 0x00, 0x04,
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0x00, 0x64, 0x64, 0x37, 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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});
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command(LUT_WW, {
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0x54, 0x64, 0x64, 0x37, 0x00, 0x01,
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0x60, 0x8c, 0x8c, 0x00, 0x00, 0x04,
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0xa8, 0x64, 0x64, 0x37, 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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});
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command(LUT_BW, {
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0x54, 0x64, 0x64, 0x37, 0x00, 0x01,
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0x60, 0x8c, 0x8c, 0x00, 0x00, 0x04,
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0xa8, 0x64, 0x64, 0x37, 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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});
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command(LUT_WB, {
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0xa8, 0x64, 0x64, 0x37, 0x00, 0x01,
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0x60, 0x8c, 0x8c, 0x00, 0x00, 0x04,
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0x54, 0x64, 0x64, 0x37, 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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});
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command(LUT_BB, {
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0xa8, 0x64, 0x64, 0x37, 0x00, 0x01,
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0x60, 0x8c, 0x8c, 0x00, 0x00, 0x04,
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0x54, 0x64, 0x64, 0x37, 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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});
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busy_wait();
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}
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void UC8151_Legacy::medium_luts() {
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command(LUT_VCOM, {
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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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});
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command(LUT_WW, {
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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
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});
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command(LUT_BW, {
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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
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});
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command(LUT_WB, {
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0xa8, 0x16, 0x16, 0x0d, 0x00, 0x01,
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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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});
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command(LUT_BB, {
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0xa8, 0x16, 0x16, 0x0d, 0x00, 0x01,
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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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});
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busy_wait();
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}
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void UC8151_Legacy::fast_luts() {
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// 0x3c, 0x00, 0x2b, 0x2b, 0x24, 0x1a, ????
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command(LUT_VCOM, {
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0x00, 0x04, 0x04, 0x07, 0x00, 0x01,
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0x00, 0x0c, 0x0c, 0x00, 0x00, 0x02,
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0x00, 0x04, 0x04, 0x07, 0x00, 0x02,
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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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});
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command(LUT_WW, {
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0x54, 0x04, 0x04, 0x07, 0x00, 0x01,
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0x60, 0x0c, 0x0c, 0x00, 0x00, 0x02,
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0xa8, 0x04, 0x04, 0x07, 0x00, 0x02,
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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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});
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command(LUT_BW, {
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0x54, 0x04, 0x04, 0x07, 0x00, 0x01,
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0x60, 0x0c, 0x0c, 0x00, 0x00, 0x02,
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0xa8, 0x04, 0x04, 0x07, 0x00, 0x02,
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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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});
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command(LUT_WB, {
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0xa8, 0x04, 0x04, 0x07, 0x00, 0x01,
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0x60, 0x0c, 0x0c, 0x00, 0x00, 0x02,
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0x54, 0x04, 0x04, 0x07, 0x00, 0x02,
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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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});
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command(LUT_BB, {
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0xa8, 0x04, 0x04, 0x07, 0x00, 0x01,
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0x60, 0x0c, 0x0c, 0x00, 0x00, 0x02,
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0x54, 0x04, 0x04, 0x07, 0x00, 0x02,
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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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});
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command(PLL, {
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HZ_200
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});
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busy_wait();
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}
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void UC8151_Legacy::turbo_luts() {
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// 0x3c, 0x00, 0x2b, 0x2b, 0x24, 0x1a, ????
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command(LUT_VCOM, {
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0x00, 0x01, 0x01, 0x02, 0x00, 0x01,
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0x00, 0x02, 0x02, 0x00, 0x00, 0x02,
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0x00, 0x02, 0x02, 0x03, 0x00, 0x02,
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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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});
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command(LUT_WW, {
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0x54, 0x01, 0x01, 0x02, 0x00, 0x01,
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0x60, 0x02, 0x02, 0x00, 0x00, 0x02,
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0xa8, 0x02, 0x02, 0x03, 0x00, 0x02,
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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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});
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command(LUT_BW, {
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0x54, 0x01, 0x01, 0x02, 0x00, 0x01,
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0x60, 0x02, 0x02, 0x00, 0x00, 0x02,
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0xa8, 0x02, 0x02, 0x03, 0x00, 0x02,
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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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});
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command(LUT_WB, {
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0xa8, 0x01, 0x01, 0x02, 0x00, 0x01,
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0x60, 0x02, 0x02, 0x00, 0x00, 0x02,
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0x54, 0x02, 0x02, 0x03, 0x00, 0x02,
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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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});
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command(LUT_BB, {
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0xa8, 0x01, 0x01, 0x02, 0x00, 0x01,
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0x60, 0x02, 0x02, 0x00, 0x00, 0x02,
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0x54, 0x02, 0x02, 0x03, 0x00, 0x02,
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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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});
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command(PLL, {
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HZ_200
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});
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busy_wait();
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}
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void UC8151_Legacy::init() {
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// configure spi interface and pins
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spi_init(spi, 12'000'000);
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gpio_set_function(DC, GPIO_FUNC_SIO);
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gpio_set_dir(DC, GPIO_OUT);
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gpio_set_function(CS, GPIO_FUNC_SIO);
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gpio_set_dir(CS, GPIO_OUT);
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gpio_put(CS, 1);
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gpio_set_function(RESET, GPIO_FUNC_SIO);
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gpio_set_dir(RESET, GPIO_OUT);
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gpio_put(RESET, 1);
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gpio_set_function(BUSY, GPIO_FUNC_SIO);
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gpio_set_dir(BUSY, GPIO_IN);
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gpio_set_pulls(BUSY, true, false);
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gpio_set_function(SCK, GPIO_FUNC_SPI);
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gpio_set_function(MOSI, GPIO_FUNC_SPI);
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setup();
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};
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void UC8151_Legacy::setup(uint8_t speed) {
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reset();
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_update_speed = speed;
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if(speed == 0) {
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command(PSR, {
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RES_128x296 | LUT_OTP | FORMAT_BW | SHIFT_RIGHT | BOOSTER_ON | RESET_NONE
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});
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} else {
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command(PSR, {
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RES_128x296 | LUT_REG | FORMAT_BW | SHIFT_RIGHT | BOOSTER_ON | RESET_NONE
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});
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}
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switch(speed) {
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case 0:
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// Note: the defult luts are built in so we don't really need to flash them here
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// they are preserved above for posterity and reference mostly.
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break;
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case 1:
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medium_luts();
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break;
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case 2:
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fast_luts();
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break;
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case 3:
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turbo_luts();
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break;
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default:
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break;
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}
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command(PWR, {
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VDS_INTERNAL | VDG_INTERNAL,
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VCOM_VD | VGHL_16V,
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0b101011,
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0b101011,
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0b101011
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});
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command(PON); // power on
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busy_wait();
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// booster soft start configuration
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command(BTST, {
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START_10MS | STRENGTH_3 | OFF_6_58US,
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START_10MS | STRENGTH_3 | OFF_6_58US,
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START_10MS | STRENGTH_3 | OFF_6_58US
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});
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command(PFS, {
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FRAMES_1
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});
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command(TSE, {
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TEMP_INTERNAL | OFFSET_0
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});
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command(TCON, {0x22}); // tcon setting
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command(CDI, {(uint8_t)(inverted ? 0b01'01'1100 : 0b01'00'1100)}); // vcom and data interval
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command(PLL, {
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HZ_100
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});
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command(POF);
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busy_wait();
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}
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void UC8151_Legacy::power_off() {
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command(POF);
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}
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void UC8151_Legacy::read(uint8_t reg, size_t len, uint8_t *data) {
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gpio_put(CS, 0);
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gpio_put(DC, 0); // command mode
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spi_write_blocking(spi, ®, 1);
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if(len > 0) {
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gpio_put(DC, 1); // data mode
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gpio_set_function(SCK, GPIO_FUNC_SIO);
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gpio_set_dir(SCK, GPIO_OUT);
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gpio_set_function(MOSI, GPIO_FUNC_SIO);
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gpio_set_dir(MOSI, GPIO_IN);
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for(auto i = 0u; i < len; i++) {
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int byte = i / 8;
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int bit = i % 8;
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gpio_put(SCK, true);
|
|
bool value = gpio_get(MOSI);
|
|
data[byte] |= value << (7-bit);
|
|
gpio_put(SCK, false);
|
|
}
|
|
|
|
gpio_set_function(SCK, GPIO_FUNC_SPI);
|
|
gpio_set_function(MOSI, GPIO_FUNC_SPI);
|
|
}
|
|
|
|
gpio_put(CS, 1);
|
|
}
|
|
|
|
void UC8151_Legacy::command(uint8_t reg, size_t len, const uint8_t *data) {
|
|
gpio_put(CS, 0);
|
|
|
|
gpio_put(DC, 0); // command mode
|
|
spi_write_blocking(spi, ®, 1);
|
|
|
|
if(len > 0) {
|
|
gpio_put(DC, 1); // data mode
|
|
spi_write_blocking(spi, (const uint8_t*)data, len);
|
|
}
|
|
|
|
gpio_put(CS, 1);
|
|
}
|
|
|
|
void UC8151_Legacy::data(size_t len, const uint8_t *data) {
|
|
gpio_put(CS, 0);
|
|
gpio_put(DC, 1); // data mode
|
|
spi_write_blocking(spi, (const uint8_t*)data, len);
|
|
gpio_put(CS, 1);
|
|
}
|
|
|
|
void UC8151_Legacy::command(uint8_t reg, std::initializer_list<uint8_t> values) {
|
|
command(reg, values.size(), (uint8_t *)values.begin());
|
|
}
|
|
|
|
void UC8151_Legacy::pixel(int x, int y, int v) {
|
|
// bounds check
|
|
if(x < 0 || y < 0 || x >= width || y >= height) return;
|
|
|
|
// pointer to byte in framebuffer that contains this pixel
|
|
uint8_t *p = &frame_buffer[(y / 8) + (x * (height / 8))];
|
|
|
|
uint8_t o = 7 - (y & 0b111); // bit offset within byte
|
|
uint8_t m = ~(1 << o); // bit mask for byte
|
|
uint8_t b = (v == 0 ? 0 : 1) << o; // bit value shifted to position
|
|
|
|
*p &= m; // clear bit
|
|
*p |= b; // set bit value
|
|
}
|
|
|
|
uint8_t* UC8151_Legacy::get_frame_buffer() {
|
|
return frame_buffer;
|
|
}
|
|
|
|
void UC8151_Legacy::invert(bool inv) {
|
|
inverted = inv;
|
|
command(CDI, {(uint8_t)(inverted ? 0b01'01'1100 : 0b01'00'1100)}); // vcom and data interval
|
|
}
|
|
|
|
void UC8151_Legacy::update_speed(uint8_t speed) {
|
|
setup(speed);
|
|
}
|
|
|
|
uint8_t UC8151_Legacy::update_speed() {
|
|
return _update_speed;
|
|
}
|
|
|
|
uint32_t UC8151_Legacy::update_time() {
|
|
switch(_update_speed) {
|
|
case 0:
|
|
return 4500;
|
|
case 1:
|
|
return 2000;
|
|
case 2:
|
|
return 800;
|
|
case 3:
|
|
return 250;
|
|
default:
|
|
return 4500;
|
|
}
|
|
}
|
|
|
|
void UC8151_Legacy::partial_update(int x, int y, int w, int h, bool blocking) {
|
|
// y is given in columns ("banks"), which are groups of 8 horiontal pixels
|
|
// x is given in pixels
|
|
if(blocking) {
|
|
busy_wait();
|
|
}
|
|
|
|
int cols = h / 8;
|
|
int y1 = y / 8;
|
|
//int y2 = y1 + cols;
|
|
|
|
int rows = w;
|
|
int x1 = x;
|
|
//int x2 = x + rows;
|
|
|
|
uint8_t partial_window[7] = {
|
|
(uint8_t)(y),
|
|
(uint8_t)(y + h - 1),
|
|
(uint8_t)(x >> 8),
|
|
(uint8_t)(x & 0xff),
|
|
(uint8_t)((x + w - 1) >> 8),
|
|
(uint8_t)((x + w - 1) & 0xff),
|
|
0b00000001 // PT_SCAN
|
|
};
|
|
command(PON); // turn on
|
|
|
|
command(PTIN); // enable partial mode
|
|
command(PTL, sizeof(partial_window), partial_window);
|
|
|
|
command(DTM2);
|
|
for (auto dx = 0; dx < rows; dx++) {
|
|
int sx = dx + x1;
|
|
int sy = y1;
|
|
data(cols, &frame_buffer[sy + (sx * (height / 8))]);
|
|
}
|
|
command(DSP); // data stop
|
|
|
|
command(DRF); // start display refresh
|
|
|
|
if(blocking) {
|
|
busy_wait();
|
|
|
|
command(POF); // turn off
|
|
}
|
|
}
|
|
|
|
void UC8151_Legacy::update(bool blocking) {
|
|
if(blocking) {
|
|
busy_wait();
|
|
}
|
|
|
|
command(PON); // turn on
|
|
|
|
command(PTOU); // disable partial mode
|
|
|
|
command(DTM2, (width * height) / 8, frame_buffer); // transmit framebuffer
|
|
command(DSP); // data stop
|
|
|
|
command(DRF); // start display refresh
|
|
|
|
if(blocking) {
|
|
busy_wait();
|
|
|
|
command(POF); // turn off
|
|
}
|
|
}
|
|
|
|
void UC8151_Legacy::off() {
|
|
busy_wait();
|
|
command(POF); // turn off
|
|
}
|
|
|
|
}
|