SKRmini support for Fysetc Mini Panel (#14319)
Tanguy Pruvot
5 years ago
committed by
Scott Lahteine
parent
bf64dd4db6
commit
75aeb41ab7
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/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifdef __STM32F1__
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#include "../../inc/MarlinConfig.h"
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#if HAS_GRAPHICAL_LCD
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#include "HAL.h"
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#include <U8glib.h>
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#undef SPI_SPEED
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#define SPI_SPEED 0 // Fastest
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//#define SPI_SPEED 2 // Slower
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static uint8_t SPI_speed = SPI_SPEED;
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static inline uint8_t swSpiTransfer_mode_0(uint8_t b, const uint8_t spi_speed, const pin_t miso_pin=-1) {
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for (uint8_t i = 0; i < 8; i++) {
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if (spi_speed == 0) {
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WRITE(DOGLCD_MOSI, !!(b & 0x80));
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WRITE(DOGLCD_SCK, HIGH);
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b <<= 1;
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if (miso_pin >= 0 && READ(miso_pin)) b |= 1;
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WRITE(DOGLCD_SCK, LOW);
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}
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else {
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const uint8_t state = (b & 0x80) ? HIGH : LOW;
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for (uint8_t j = 0; j < spi_speed; j++)
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WRITE(DOGLCD_MOSI, state);
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for (uint8_t j = 0; j < spi_speed + (miso_pin >= 0 ? 0 : 1); j++)
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WRITE(DOGLCD_SCK, HIGH);
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b <<= 1;
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if (miso_pin >= 0 && READ(miso_pin)) b |= 1;
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for (uint8_t j = 0; j < spi_speed; j++)
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WRITE(DOGLCD_SCK, LOW);
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}
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}
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return b;
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}
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static inline uint8_t swSpiTransfer_mode_3(uint8_t b, const uint8_t spi_speed, const pin_t miso_pin=-1) {
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for (uint8_t i = 0; i < 8; i++) {
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const uint8_t state = (b & 0x80) ? HIGH : LOW;
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if (spi_speed == 0) {
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WRITE(DOGLCD_SCK, LOW);
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WRITE(DOGLCD_MOSI, state);
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WRITE(DOGLCD_MOSI, state); // need some setup time
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WRITE(DOGLCD_SCK, HIGH);
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}
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else {
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for (uint8_t j = 0; j < spi_speed + (miso_pin >= 0 ? 0 : 1); j++)
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WRITE(DOGLCD_SCK, LOW);
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for (uint8_t j = 0; j < spi_speed; j++)
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WRITE(DOGLCD_MOSI, state);
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for (uint8_t j = 0; j < spi_speed; j++)
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WRITE(DOGLCD_SCK, HIGH);
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}
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b <<= 1;
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if (miso_pin >= 0 && READ(miso_pin)) b |= 1;
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}
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return b;
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}
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static void u8g_sw_spi_HAL_STM32F1_shift_out(uint8_t val) {
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#if ENABLED(FYSETC_MINI_12864)
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swSpiTransfer_mode_3(val, SPI_speed);
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#else
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swSpiTransfer_mode_0(val, SPI_speed);
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#endif
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}
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static uint8_t swSpiInit(const uint8_t spi_speed) {
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#if PIN_EXISTS(LCD_RESET)
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SET_OUTPUT(LCD_RESET_PIN);
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#endif
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SET_OUTPUT(DOGLCD_A0);
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OUT_WRITE(DOGLCD_SCK, LOW);
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OUT_WRITE(DOGLCD_MOSI, LOW);
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OUT_WRITE(DOGLCD_CS, HIGH);
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return spi_speed;
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}
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uint8_t u8g_com_HAL_STM32F1_sw_spi_fn(u8g_t *u8g, uint8_t msg, uint8_t arg_val, void *arg_ptr) {
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switch (msg) {
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case U8G_COM_MSG_INIT:
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SPI_speed = swSpiInit(SPI_SPEED);
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break;
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case U8G_COM_MSG_STOP:
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break;
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case U8G_COM_MSG_RESET:
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#if PIN_EXISTS(LCD_RESET)
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WRITE(LCD_RESET_PIN, arg_val);
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#endif
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break;
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case U8G_COM_MSG_CHIP_SELECT:
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#if ENABLED(FYSETC_MINI_12864) // This LCD SPI is running mode 3 while SD card is running mode 0
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if (arg_val) { // SCK idle state needs to be set to the proper idle state before
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// the next chip select goes active
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WRITE(DOGLCD_SCK, HIGH); // Set SCK to mode 3 idle state before CS goes active
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WRITE(DOGLCD_CS, LOW);
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}
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else {
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WRITE(DOGLCD_CS, HIGH);
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WRITE(DOGLCD_SCK, LOW); // Set SCK to mode 0 idle state after CS goes inactive
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}
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#else
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WRITE(DOGLCD_CS, !arg_val);
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#endif
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break;
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case U8G_COM_MSG_WRITE_BYTE:
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u8g_sw_spi_HAL_STM32F1_shift_out(arg_val);
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break;
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case U8G_COM_MSG_WRITE_SEQ: {
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uint8_t *ptr = (uint8_t *)arg_ptr;
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while (arg_val > 0) {
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u8g_sw_spi_HAL_STM32F1_shift_out(*ptr++);
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arg_val--;
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}
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} break;
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case U8G_COM_MSG_WRITE_SEQ_P: {
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uint8_t *ptr = (uint8_t *)arg_ptr;
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while (arg_val > 0) {
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u8g_sw_spi_HAL_STM32F1_shift_out(u8g_pgm_read(ptr));
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ptr++;
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arg_val--;
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}
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} break;
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case U8G_COM_MSG_ADDRESS: /* define cmd (arg_val = 0) or data mode (arg_val = 1) */
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WRITE(DOGLCD_A0, arg_val);
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break;
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}
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return 1;
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}
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#endif // HAS_GRAPHICAL_LCD
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#endif // STM32F1
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