First init.

2025-10-12 09:13:56 +02:00
commit 1548aeaf9b
458 changed files with 118808 additions and 0 deletions
--- a/libraries/mcu-renderer/examples/gammacalibration-stm32-st7789/src/display.c
+++ b/libraries/mcu-renderer/examples/gammacalibration-stm32-st7789/src/display.c
@@ -0,0 +1,154 @@
+/*
+ * MCU renderer
+ * ST7789 on STM32
+ *
+ * (C) 2023-2024 Gissio
+ *
+ * License: MIT
+ */
+
+#include <libopencm3/stm32/gpio.h>
+#include <libopencm3/stm32/rcc.h>
+#include <libopencm3/stm32/spi.h>
+
+#include "display.h"
+#include "system.h"
+
+// Connections
+
+#define DISPLAY_RESX_PORT GPIOB
+#define DISPLAY_RESX_PIN GPIO0
+#define DISPLAY_CSX_PORT GPIOB
+#define DISPLAY_CSX_PIN GPIO1
+#define DISPLAY_DCX_PORT GPIOB
+#define DISPLAY_DCX_PIN GPIO10
+#define DISPLAY_SCL_PORT GPIOA
+#define DISPLAY_SCL_PIN GPIO5
+#define DISPLAY_SDA_PORT GPIOA
+#define DISPLAY_SDA_PIN GPIO7
+
+// Display
+
+static uint8_t display_text_buffer[80 * 80];
+
+static const uint8_t display_init_sequence[] = {
+    MR_SEND_COMMAND(MR_ST7789_INVON), // Inverse for IPS displays
+    MR_END(),
+};
+
+void on_display_sleep(uint32_t value);
+void on_display_set_reset(bool value);
+void on_display_set_command(bool value);
+void on_display_send(uint16_t value);
+void on_display_send16(uint16_t value);
+
+void on_display_sleep(uint32_t value)
+{
+    sleep(value);
+}
+
+void on_display_set_reset(bool value)
+{
+    if (value)
+        gpio_clear(DISPLAY_RESX_PORT,
+                   DISPLAY_RESX_PIN);
+    else
+        gpio_set(DISPLAY_RESX_PORT,
+                 DISPLAY_RESX_PIN);
+}
+
+void on_display_set_command(bool value)
+{
+    if (value)
+    {
+        // Trigger CS before command
+        gpio_set(DISPLAY_CSX_PORT,
+                 DISPLAY_CSX_PIN);
+        gpio_clear(DISPLAY_CSX_PORT,
+                   DISPLAY_CSX_PIN);
+
+        gpio_clear(DISPLAY_DCX_PORT,
+                   DISPLAY_DCX_PIN);
+    }
+    else
+        gpio_set(DISPLAY_DCX_PORT,
+                 DISPLAY_DCX_PIN);
+}
+
+void on_display_send(uint16_t value)
+{
+    spi_send(SPI1, value);
+}
+
+void on_display_send16(uint16_t value)
+{
+    spi_send(SPI1, (value >> 8) & 0xff);
+    spi_send(SPI1, (value >> 0) & 0xff);
+}
+
+void init_display(mr_t *mr)
+{
+    // Setup GPIO
+    gpio_set(DISPLAY_RESX_PORT,
+             DISPLAY_RESX_PIN);
+    gpio_set(DISPLAY_CSX_PORT,
+             DISPLAY_CSX_PIN);
+
+    gpio_set_mode(DISPLAY_RESX_PORT,
+                  GPIO_MODE_OUTPUT_50_MHZ,
+                  GPIO_CNF_OUTPUT_PUSHPULL,
+                  DISPLAY_RESX_PIN);
+    gpio_set_mode(DISPLAY_CSX_PORT,
+                  GPIO_MODE_OUTPUT_50_MHZ,
+                  GPIO_CNF_OUTPUT_PUSHPULL,
+                  DISPLAY_CSX_PIN);
+    gpio_set_mode(DISPLAY_DCX_PORT,
+                  GPIO_MODE_OUTPUT_50_MHZ,
+                  GPIO_CNF_OUTPUT_PUSHPULL,
+                  DISPLAY_DCX_PIN);
+    gpio_set_mode(DISPLAY_SCL_PORT,
+                  GPIO_MODE_OUTPUT_50_MHZ,
+                  GPIO_CNF_OUTPUT_ALTFN_PUSHPULL,
+                  DISPLAY_SCL_PIN);
+    gpio_set_mode(DISPLAY_SDA_PORT,
+                  GPIO_MODE_OUTPUT_50_MHZ,
+                  GPIO_CNF_OUTPUT_ALTFN_PUSHPULL,
+                  DISPLAY_SDA_PIN);
+
+    // Setup SPI
+    rcc_periph_clock_enable(RCC_SPI1);
+    spi_init_master(SPI1,
+                    SPI_CR1_BAUDRATE_FPCLK_DIV_2,
+                    SPI_CR1_CPOL_CLK_TO_1_WHEN_IDLE,
+                    SPI_CR1_CPHA_CLK_TRANSITION_2,
+                    SPI_CR1_DFF_8BIT,
+                    SPI_CR1_MSBFIRST);
+    spi_enable_software_slave_management(SPI1);
+    spi_set_nss_high(SPI1);
+    spi_enable(SPI1);
+
+    // Setup display
+    mr_st7789_init(mr,
+                   DISPLAY_HEIGHT,
+                   DISPLAY_WIDTH,
+                   MR_DISPLAY_ROTATION_270,
+                   display_text_buffer,
+                   sizeof(display_text_buffer),
+                   on_display_sleep,
+                   on_display_set_reset,
+                   on_display_set_command,
+                   on_display_send,
+                   on_display_send16);
+
+    mr_send_sequence(mr, display_init_sequence);
+}
+
+void set_display(mr_t *mr, bool value)
+{
+    mr_st7789_set_display(mr, value);
+    mr_st7789_set_sleep(mr, !value);
+}
+
+void update_display(mr_t *mr)
+{
+}