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GadgetoidGadgetoid
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Merge pull request #663 from pimoroni/feature/inky73
Support for Inky Frame 7.3" (using direct pen into PSRAM framebuffer)
2 parents f06d7c2 + ab488a4 commit 93ac854

31 files changed

+919
-25
lines changed

‎drivers/CMakeLists.txt‎

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@@ -39,4 +39,7 @@ add_subdirectory(vl53l5cx)
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add_subdirectory(pcf85063a)
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add_subdirectory(pms5003)
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add_subdirectory(sh1107)
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add_subdirectory(st7567)
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add_subdirectory(st7567)
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add_subdirectory(psram_display)
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add_subdirectory(inky73)
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add_subdirectory(shiftregister)

‎drivers/inky73/CMakeLists.txt‎

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include(inky73.cmake)

‎drivers/inky73/inky73.cmake‎

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set(DRIVER_NAME inky73)
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add_library(${DRIVER_NAME} INTERFACE)
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target_sources(${DRIVER_NAME} INTERFACE
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${CMAKE_CURRENT_LIST_DIR}/${DRIVER_NAME}.cpp)
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target_include_directories(${DRIVER_NAME} INTERFACE ${CMAKE_CURRENT_LIST_DIR})
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# Pull in pico libraries that we need
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target_link_libraries(${DRIVER_NAME} INTERFACE pico_stdlib hardware_spi shiftregister)

‎drivers/inky73/inky73.cpp‎

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#include "inky73.hpp"
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#include <cstdlib>
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#include <math.h>
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#include <string.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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BTST1 = 0x05,
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BTST2 = 0x06,
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DSLP = 0x07,
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BTST3 = 0x08,
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DTM1 = 0x10,
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DSP = 0x11,
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DRF = 0x12,
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IPC = 0x13,
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PLL = 0x30,
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TSC = 0x40,
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TSE = 0x41,
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TSW = 0x42,
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TSR = 0x43,
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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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DAM = 0x65,
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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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T_VDCS = 0x84,
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AGID = 0x86,
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CMDH = 0xAA,
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CCSET =0xE0,
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PWS = 0xE3,
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TSSET = 0xE6 // E5 or E6
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};
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bool Inky73::is_busy() {
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return !(sr.read() & 128);
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}
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void Inky73::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 Inky73::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 Inky73::init() {
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// configure spi interface and pins
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spi_init(spi, 20'000'000);
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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(SCK, GPIO_FUNC_SPI);
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gpio_set_function(MOSI, GPIO_FUNC_SPI);
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};
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void Inky73::setup() {
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reset();
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busy_wait();
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command(CMDH, {0x49, 0x55, 0x20, 0x08, 0x09, 0x18});
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command(PWR, {0x3F, 0x00, 0x32, 0x2A, 0x0E, 0x2A});
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if (rotation == ROTATE_0) {
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command(PSR, {0x53, 0x69});
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} else {
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command(PSR, {0x5F, 0x69});
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}
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//command(PSR, {0x5F, 0x69});
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command(PFS, {0x00, 0x54, 0x00, 0x44});
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command(BTST1, {0x40, 0x1F, 0x1F, 0x2C});
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command(BTST2, {0x6F, 0x1F, 0x16, 0x25});
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command(BTST3, {0x6F, 0x1F, 0x1F, 0x22});
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command(IPC, {0x00, 0x04});
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command(PLL, {0x02});
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command(TSE, {0x00});
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command(CDI, {0x3F});
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command(TCON, {0x02, 0x00});
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command(TRES, {0x03, 0x20, 0x01, 0xE0});
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command(VDCS, {0x1E});
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command(T_VDCS, {0x00});
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command(AGID, {0x00});
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command(PWS, {0x2F});
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command(CCSET, {0x00});
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command(TSSET, {0x00});
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}
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void Inky73::set_blocking(bool blocking) {
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this->blocking = blocking;
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}
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void Inky73::power_off() {
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busy_wait();
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command(POF); // turn off
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}
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void Inky73::command(uint8_t reg, size_t len, const 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, &reg, 1);
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if(len > 0) {
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gpio_put(DC, 1); // data mode
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spi_write_blocking(spi, (const uint8_t*)data, len);
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}
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gpio_put(CS, 1);
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}
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void Inky73::data(size_t len, const uint8_t *data) {
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gpio_put(CS, 0);
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gpio_put(DC, 1); // data mode
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spi_write_blocking(spi, (const uint8_t*)data, len);
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gpio_put(CS, 1);
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}
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void Inky73::command(uint8_t reg, std::initializer_list<uint8_t> values) {
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command(reg, values.size(), (uint8_t *)values.begin());
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}
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void Inky73::update(PicoGraphics *graphics) {
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if(graphics->pen_type != PicoGraphics::PEN_INKY7) return; // Incompatible buffer
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if(blocking) {
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busy_wait();
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}
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setup();
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gpio_put(CS, 0);
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uint8_t reg = DTM1;
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gpio_put(DC, 0); // command mode
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spi_write_blocking(spi, &reg, 1);
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gpio_put(DC, 1); // data mode
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uint totalLength = 0;
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gpio_put(CS, 1);
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graphics->frame_convert(PicoGraphics::PEN_INKY7, [this, &totalLength](void *buf, size_t length) {
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if (length > 0) {
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gpio_put(CS, 0);
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spi_write_blocking(spi, (const uint8_t*)buf, length);
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totalLength += length;
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gpio_put(CS, 1);
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}
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});
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gpio_put(DC, 0); // data mode
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gpio_put(CS, 1);
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busy_wait();
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command(PON, {0}); // turn on
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busy_wait();
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command(DRF, {0}); // start display refresh
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busy_wait();
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if(blocking) {
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busy_wait();
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command(POF); // turn off
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}
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}
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bool Inky73::is_pressed(Button button) {
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return sr.read() & button;
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}
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}

‎drivers/inky73/inky73.hpp‎

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#pragma once
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#include <initializer_list>
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#include "pico/stdlib.h"
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#include "hardware/spi.h"
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#include "hardware/gpio.h"
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#include "common/pimoroni_common.hpp"
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#include "common/pimoroni_bus.hpp"
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#include "libraries/pico_graphics/pico_graphics.hpp"
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#include "drivers/shiftregister/shiftregister.hpp"
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namespace pimoroni {
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class Inky73 : public DisplayDriver {
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//--------------------------------------------------
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// Variables
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//--------------------------------------------------
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private:
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spi_inst_t *spi = PIMORONI_SPI_DEFAULT_INSTANCE;
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// interface pins with our standard defaults where appropriate
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uint CS = SPI_BG_FRONT_CS;
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uint DC = 28; // 27;
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uint SCK = SPI_DEFAULT_SCK;
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uint MOSI = SPI_DEFAULT_MOSI;
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uint RESET = 27; //25;
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uint SR_CLOCK = 8;
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uint SR_LATCH = 9;
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uint SR_DATA = 10;
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bool blocking = false;
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ShiftRegister<uint8_t> sr = ShiftRegister<uint8_t>(SR_CLOCK, SR_LATCH, SR_DATA);
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public:
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enum Button : uint8_t {
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BUTTON_A = 1,
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BUTTON_B = 2,
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BUTTON_C = 4,
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BUTTON_D = 8,
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BUTTON_E = 16
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};
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enum colour : uint8_t {
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BLACK = 0,
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WHITE = 1,
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GREEN = 2,
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BLUE = 3,
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RED = 4,
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YELLOW = 5,
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ORANGE = 6,
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CLEAN = 7
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};
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Inky73(uint16_t width, uint16_t height) : Inky73(width, height, ROTATE_0, {PIMORONI_SPI_DEFAULT_INSTANCE, SPI_BG_FRONT_CS, SPI_DEFAULT_SCK, SPI_DEFAULT_MOSI, PIN_UNUSED, 28, PIN_UNUSED}) {};
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Inky73(uint16_t width, uint16_t height, SPIPins pins, uint reset=27) : Inky73(width, height, ROTATE_0, pins, reset) {};
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Inky73(uint16_t width, uint16_t height, Rotation rotation, SPIPins pins, uint reset=27) :
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DisplayDriver(width, height, rotation),
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spi(pins.spi),
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CS(pins.cs), DC(pins.dc), SCK(pins.sck), MOSI(pins.mosi), RESET(reset) {
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init();
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}
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//--------------------------------------------------
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// Methods
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//--------------------------------------------------
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public:
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void busy_wait();
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void reset();
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void power_off();
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bool is_busy() override;
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void update(PicoGraphics *graphics) override;
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void set_blocking(bool blocking);
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bool is_pressed(Button button);
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private:
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void init();
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void setup();
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void command(uint8_t reg, size_t len, const uint8_t *data);
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void command(uint8_t reg, std::initializer_list<uint8_t> values);
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void command(uint8_t reg, const uint8_t data) {command(reg, 0, &data);};
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void command(uint8_t reg) {command(reg, 0, nullptr);};
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void data(size_t len, const uint8_t *data);
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};
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}

‎drivers/psram_display/CMakeLists.txt‎

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include(psram_display.cmake)

‎drivers/psram_display/psram_display.cmake‎

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set(DRIVER_NAME psram_display)
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add_library(${DRIVER_NAME} INTERFACE)
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target_sources(${DRIVER_NAME} INTERFACE
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${CMAKE_CURRENT_LIST_DIR}/${DRIVER_NAME}.cpp)
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target_include_directories(${DRIVER_NAME} INTERFACE ${CMAKE_CURRENT_LIST_DIR})
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# Pull in pico libraries that we need
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target_link_libraries(${DRIVER_NAME} INTERFACE pico_stdlib hardware_spi)

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