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Adapt SAxPRO to new structure
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@Apehaenger
Apehaenger committed Nov 29, 2023
1 parent 20355b1 commit 0061110
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Showing 11 changed files with 708 additions and 683 deletions.
3 changes: 2 additions & 1 deletion Firmware/CoverUI/YardForce/ST75256.cpp
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Expand Up @@ -22,7 +22,7 @@ namespace yardforce
SPI_HandleTypeDef hspi2;

// Initialize control and data lines, as well as display
void ST75256::init()
bool ST75256::init()
{
initConnection_();

Expand All @@ -39,6 +39,7 @@ namespace yardforce
#ifdef BENCHMARK
cycle_cnt_init_.stop();
#endif
return true;
}

void ST75256::initConnection_()
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264 changes: 264 additions & 0 deletions Firmware/CoverUI/YardForce/UC1698.cpp
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@@ -0,0 +1,264 @@
/**
* @file UC1698.cpp
* @author Apehaenger ([email protected])
* @brief YardForce CoverUI UC1698 display controller class for OpenMower https://github.com/ClemensElflein/OpenMower
* UC1698 display driver for monochrome COG LCD with parallel interface, for STM32.
* Derived from https://github.com/henningmz/uc1698 AdafruitGFX implementation, stripped down and heavily optimized.
* @version 0.3
* @date 2023-11-29
*
* @copyright Copyright (c) 2023
*
*/
#include "include/UC1698.hpp"

namespace yardforce
{
namespace display
{
namespace controller
{
// Initialize control and data lines
bool UC1698::init()
{
initConnection_();

// Reset via RST control line
digitalWrite(PIN_CS, 0); // Chip select
digitalWrite(PIN_RST, 0);
delay(1);
digitalWrite(PIN_RST, 1);
digitalWrite(PIN_CS, 1); // Chip deselect
delay(UC1698_RESET_DELAY_MS); // Wait for MTP read ready (after RST)

// Check if it's an UC1698
uint8_t *status;
status = getStatus();
if ((status[2] & 0b11110000) >> 4 != 0b1000)
{
return false;
}

initDisplay_();
return true;
}

// Fill screen (t_color: false = white, true = black)
void UC1698::fillScreen(bool t_color_black)
{
setWindowProgramArea(0, UC1698_DISPLAY_WIDTH - 1, 0, UC1698_DISPLAY_HEIGHT - 1);

for (uint8_t i = 0; i < UC1698_DISPLAY_HEIGHT; i++)
{
for (uint8_t j = 0; j < UC1698_DISPLAY_WIDTH / 3; j++)
{
drawPixelTriplet(t_color_black, t_color_black, t_color_black);
}
}
}

// Draw pixel triplet draws 3 pixels with one command.
// Each UC1698 R,G,B line is connected to 3 x-pixels of his monochrome display.
void UC1698::drawPixelTriplet(bool pixel1State, bool pixel2State, bool pixel3State)
{
writeData((0b1111100000000000 * pixel1State) | (0b0000011111100000 * pixel2State) | (0b0000000000011111 * pixel3State));
}

// [3] Get Status & PM
// and write it to public member array status_a
uint8_t *UC1698::getStatus()
{
static uint8_t status[UC1698_GET_STATUS_SIZE];

digitalWrite(PIN_CS, 0); // Chip select
digitalWrite(PIN_CD, 0); // Command
for (unsigned int i = 0; i < UC1698_GET_STATUS_SIZE; i++)
{
status[i] = read_();
}
digitalWrite(PIN_CS, 1); // Chip deselect

return status;
}

// [4] Set Column Address
void UC1698::setColumnAddress(unsigned int t_col)
{
writeCommand(0b00000000 | (t_col & 0b00001111));
writeCommand(0b00010000 | (t_col & 0b01110000) >> 4);
}

// [9] Set Row Address
void UC1698::setRowAddress(unsigned int t_row)
{
writeCommand(0b01100000 | (t_row & 0b00001111));
writeCommand(0b01110000 | (t_row & 0b11110000) >> 4);
}

// [17] Set Display Enable
// Sets also Green Enhance Mode to disabled, Gray Shade to On/Off
void UC1698::setDisplayEnable(bool t_sleep_mode)
{
writeCommand(0b10101100 | t_sleep_mode);
}

// [18] Set LCD Mapping Control
void UC1698::setLCDMappingControl(bool mirrorX, bool mirrorY)
{
writeCommand(0b11000000 | (0b100 * mirrorY) | (0b10 * mirrorX));
}

// [10] Set VBias Potentiometer
void UC1698::setVBiasPotentiometer(unsigned int vBiasPotentiometer)
{
UC1698::writeCommand(0b10000001);
UC1698::writeCommand(vBiasPotentiometer);
}

/**
* @brief Set Window Programm Area for next display RAM write data to x1-x2, y1-y2
* Attention: By design of my monochrome LCD, which has 3 monochrome pixel (triplet on RGB) per pixel,
* x1 & x2+1 have to be a multiple of 3!!
* See LVGL's rounder_cb() callback to ensure this.
*
* @param t_x1
* @param t_x2
* @param t_y1
* @param t_y2
* @param t_outside_mode
*/
void UC1698::setWindowProgramArea(uint8_t t_x1, uint8_t t_x2, uint8_t t_y1, uint8_t t_y2, bool t_outside_mode)
{
const uint8_t data[] = {
// Set SRAM col/row start address
(uint8_t)(0x10 | (((t_x1 / 3) >> 4) & 0b00000111)), // Set Column MSB Address
(uint8_t)(0x00 | ((t_x1 / 3) & 0b00001111)), // Set Column LSB Address
(uint8_t)(0x70 | (t_y1 >> 4)), // Set Row MSB Address
(uint8_t)(0x60 | ((uint8_t)t_y1 & 0b00001111)), // Set Row LSB Address

// Set Windows Program
(0xf5), (t_y1), // Starting Row Address
(0xf7), (t_y2), // Ending Row Address
(0xf4), (uint8_t)(t_x1 / 3), // Starting Column Address
(0xf6), (uint8_t)((int8_t)((t_x2 + 1) / 3) - 1), // Ending Column Address
(uint8_t)(0xf8 | t_outside_mode) // Windows Program Mode (0 = inside, 1 = outside)
};
writeCommand(data, sizeof(data) / sizeof(uint8_t));
}

// Write command
void UC1698::writeCommand(uint8_t data)
{
digitalWrite(PIN_CS, 0); // Chip select
digitalWrite(PIN_CD, 0); // Command
writeSeq_(data);
digitalWrite(PIN_CS, 1); // Chip deselect
}

void UC1698::writeCommand(const uint8_t *data_array, unsigned int length)
{
digitalWrite(PIN_CS, 0); // Chip select
digitalWrite(PIN_CD, 0); // Command
// while (length > 0)
for (; length > 0; length--, data_array++)
{
writeSeq_(*data_array);
}
digitalWrite(PIN_CS, 1); // Chip deselect
}

void UC1698::writeData(uint16_t data)
{
digitalWrite(PIN_CS, 0); // Chip select
digitalWrite(PIN_CD, 1); // Data

uint8_t part = (uint8_t)(data >> 8);
writeSeq_(part);

part = (uint8_t)data;
writeSeq_(part);

digitalWrite(PIN_CS, 1); // Chip deselect
}

void UC1698::writeData(const uint8_t *data_array, unsigned int length)
{
digitalWrite(PIN_CS, 0); // Chip select
digitalWrite(PIN_CD, 1); // Data
for (; length > 0; length--, data_array++)
{
writeSeq_(*data_array);
}
digitalWrite(PIN_CS, 1); // Chip deselect
}

// Initialize control and data lines
void UC1698::initConnection_()
{
pinMode(PIN_CS, OUTPUT);
digitalWrite(PIN_CS, 1);
pinMode(PIN_RST, OUTPUT);
digitalWrite(PIN_RST, 1);
pinMode(PIN_RD, OUTPUT);
digitalWrite(PIN_RD, 1);
pinMode(PIN_WR, OUTPUT);
digitalWrite(PIN_WR, 1);
pinMode(PIN_CD, OUTPUT);
digitalWrite(PIN_CD, 1);
GPIO_DATA_MODE_INPUT;
}

// Initialize control and data lines
void UC1698::initDisplay_()
{
writeCommand(0x28 | 3); // 0x28 = power control command (13nF<LCD<=22nF; Internal Vlcd(*10))
writeCommand(0x24 | 1); // 0x24 = temperature control (-0.05%/C)
setLCDMappingControl(0, 1);
// this->setVBiasPotentiometer(127);
writeCommand(0b10100110 | 1); // [16] Set Inverse Display. Will save inversion logic in LVGL's flush_cb()
writeCommand(0b11010000 | 1); // [20] Set Color Pattern to R-G-B
writeCommand(0b11010110); // [21] Set Color Mode to RRRRR-GGGGGG-BBBBB, 64k-color

fillScreen(false); // Clear Screen
setDisplayEnable(true);
}

// NOP delay to fullfil ns timing requirements. Only useful for values > 100ns, otherwise use single NOOP's
void UC1698::nopDelay_(unsigned int t_ns)
{
int16_t i = t_ns / NOP_CYCLE_NS;
i -= 6; // Already consumed (or more)

for (; i >= 0; i--)
{
NOOP;
}
}

// [2*] Read data from port
uint8_t UC1698::read_()
{
GPIO_DATA_MODE_INPUT;
digitalWrite(PIN_RD, 0); // Trigger read
NOOP; // 3 * 21ns >=60ns. See Tacc80 of UC1698 datasheet page 60
NOOP;
NOOP;
uint8_t data = ((GPIO_TypeDef *)GPIO_DATA)->IDR & GPIO_DATA_MASK;
digitalWrite(PIN_RD, 1); // Read end

return data;
}

// Write data sequence
void UC1698::writeSeq_(uint8_t data)
{
GPIO_DATA_MODE_OUTPUT;

digitalWrite(PIN_WR, 0); // Trigger write
((GPIO_TypeDef *)GPIO_DATA)->ODR = (((GPIO_TypeDef *)GPIO_DATA)->ODR & ~GPIO_DATA_MASK) | data;
NOOP; // >=30ns. This NOOP = 21ns + the next cycle for the rising edge. See Tds80 of UC1698 datasheet page 60
digitalWrite(PIN_WR, 1); // Write end
}
} // namespace controller
} // namespace display
} // yardforce
2 changes: 1 addition & 1 deletion Firmware/CoverUI/YardForce/include/ST75256.hpp
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Expand Up @@ -50,7 +50,7 @@ namespace yardforce
public:
ST75256(){};

void init(); // Initialize control and data lines, as well as display
bool init(); // Initialize control and data lines, as well as display

void send_ctrl(uint8_t ctrl); // Send control command
void send_data(uint8_t data); // Send one data byte
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