Zaltora
Ruslan V. Uss
parent
0b063730f3
commit
14c8ff57ca
3 changed files with 208 additions and 36 deletions
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@ -14,7 +14,7 @@
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#if (SSD1306_I2C_SUPPORT)
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#include <i2c/i2c.h>
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#endif
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#if (SSD1306_SPI4_SUPPORT)
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#if (SSD1306_SPI4_SUPPORT) || (SSD1306_SPI3_SUPPORT)
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#include <esp/spi.h>
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#endif
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#include <esp/gpio.h>
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@ -70,6 +70,15 @@
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#define SSD1306_SCROLL_ENABLE (0x2F)
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#define SSD1306_SCROLL_DISABLE (0x2E)
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#define SH1106_SET_CHARGE_PUMP (0xAD)
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#define SH1106_CHARGE_PUMP_EN (0x8B)
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#define SH1106_CHARGE_PUMP_DIS (0x8A)
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#define SH1106_CHARGE_PUMP_VALUE (0x30)
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#define SH1106_SET_PAGE_ADDRESS (0xB0)
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#define SH1106_SET_LOW_COL_ADDR (0x00)
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#define SH1106_SET_HIGH_COL_ADDR (0x10)
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#ifdef SSD1306_DEBUG
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#define debug(fmt, ...) printf("%s: " fmt "\n", "SSD1306", ## __VA_ARGS__)
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#else
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@ -118,6 +127,15 @@ int ssd1306_command(const ssd1306_t *dev, uint8_t cmd)
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spi_transfer_8(SPI_BUS, cmd);
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gpio_write(dev->cs_pin, true);
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break;
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#endif
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#if (SSD1306_SPI3_SUPPORT)
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case SSD1306_PROTO_SPI3:
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gpio_write(dev->cs_pin, false);
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spi_set_command(SPI_BUS,1,0); // command mode
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spi_transfer_8(SPI_BUS, cmd);
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spi_clear_command(SPI_BUS);
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gpio_write(dev->cs_pin, true);
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break;
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#endif
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default:
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debug("Unsupported protocol");
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@ -157,48 +175,91 @@ int ssd1306_init(const ssd1306_t *dev)
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gpio_enable(dev->dc_pin, GPIO_OUTPUT);
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spi_init(SPI_BUS, SPI_MODE0, SPI_FREQ_DIV_8M, true, SPI_LITTLE_ENDIAN, true);
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break;
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#endif
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#if (SSD1306_SPI3_SUPPORT)
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case SSD1306_PROTO_SPI3:
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gpio_enable(dev->cs_pin, GPIO_OUTPUT);
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gpio_write(dev->cs_pin, true);
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spi_init(SPI_BUS, SPI_MODE0, SPI_FREQ_DIV_8M, true, SPI_LITTLE_ENDIAN, true);
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break;
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#endif
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default:
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debug("Unsupported protocol");
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return -EPROTONOSUPPORT;
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}
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if (!ssd1306_display_on(dev, false) &&
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!ssd1306_set_osc_freq(dev, 0x80) &&
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!ssd1306_set_mux_ratio(dev, dev->height - 1) &&
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!ssd1306_set_display_offset(dev, 0x0) &&
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!ssd1306_set_display_start_line(dev, 0x0) &&
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!ssd1306_set_charge_pump_enabled(dev, true) &&
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!ssd1306_set_mem_addr_mode(dev, SSD1306_ADDR_MODE_HORIZONTAL) &&
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!ssd1306_set_segment_remapping_enabled(dev, false) &&
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!ssd1306_set_scan_direction_fwd(dev, true) &&
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!ssd1306_set_com_pin_hw_config(dev, pin_cfg) &&
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!ssd1306_set_contrast(dev, 0x9f) &&
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!ssd1306_set_precharge_period(dev, 0xf1) &&
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!ssd1306_set_deseltct_lvl(dev, 0x40) &&
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!ssd1306_set_whole_display_lighting(dev, true) &&
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!ssd1306_set_inversion(dev, false) &&
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!ssd1306_display_on(dev, true)) {
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return 0;
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switch (dev->screen) {
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case SSD1306_SCREEN:
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if (!ssd1306_display_on(dev, false) &&
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!ssd1306_set_osc_freq(dev, 0x80) &&
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!ssd1306_set_mux_ratio(dev, dev->height - 1) &&
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!ssd1306_set_display_offset(dev, 0x0) &&
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!ssd1306_set_display_start_line(dev, 0x0) &&
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!ssd1306_set_charge_pump_enabled(dev, true) &&
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!ssd1306_set_mem_addr_mode(dev, SSD1306_ADDR_MODE_HORIZONTAL) &&
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!ssd1306_set_segment_remapping_enabled(dev, false) &&
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!ssd1306_set_scan_direction_fwd(dev, true) &&
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!ssd1306_set_com_pin_hw_config(dev, pin_cfg) &&
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!ssd1306_set_contrast(dev, 0x9f) &&
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!ssd1306_set_precharge_period(dev, 0xf1) &&
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!ssd1306_set_deseltct_lvl(dev, 0x40) &&
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!ssd1306_set_whole_display_lighting(dev, true) &&
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!ssd1306_set_inversion(dev, false) &&
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!ssd1306_display_on(dev, true)) {
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return 0;
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}
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break;
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case SH1106_SCREEN:
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if (!ssd1306_display_on(dev, false) &&
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!ssd1306_set_charge_pump_enabled(dev, true) &&
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!sh1106_set_charge_pump_voltage(dev,SH1106_VOLTAGE_74) &&
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!ssd1306_set_osc_freq(dev, 0x80) &&
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!ssd1306_set_mux_ratio(dev, dev->height - 1) &&
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!ssd1306_set_display_offset(dev, 0x0) &&
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!ssd1306_set_display_start_line(dev, 0x0) &&
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!ssd1306_set_segment_remapping_enabled(dev, true) &&
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!ssd1306_set_scan_direction_fwd(dev, true) &&
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!ssd1306_set_com_pin_hw_config(dev, pin_cfg) &&
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!ssd1306_set_contrast(dev, 0x9f) &&
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!ssd1306_set_precharge_period(dev, 0xf1) &&
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!ssd1306_set_deseltct_lvl(dev, 0x40) &&
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!ssd1306_set_whole_display_lighting(dev, true) &&
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!ssd1306_set_inversion(dev, false) &&
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!ssd1306_display_on(dev, true)) {
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return 0;
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}
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break;
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}
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return -EIO;
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}
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static int sh1106_go_coordinate(const ssd1306_t *dev, uint8_t x, uint8_t y) {
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if (x >= dev->width || y >= (dev->height/8)) return -EINVAL;
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int err = 0;
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x+=2 ; //offset : panel is 128 ; RAM is 132 for sh1106
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if ((err = ssd1306_command(dev, SH1106_SET_PAGE_ADDRESS + y))) // Set row
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return err;
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if ((err = ssd1306_command(dev, SH1106_SET_LOW_COL_ADDR | (x & 0xf)))) // Set lower column address
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return err;
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return ssd1306_command(dev, SH1106_SET_HIGH_COL_ADDR | (x >> 4)); //Set higher column address
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}
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int ssd1306_load_frame_buffer(const ssd1306_t *dev, uint8_t buf[])
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{
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uint16_t i;
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uint8_t j;
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ssd1306_set_column_addr(dev, 0, dev->width - 1);
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ssd1306_set_page_addr(dev, 0, dev->height / 8 - 1);
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size_t len = dev->width * dev->height / 8;
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if(dev->screen == SSD1306_SCREEN)
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{
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ssd1306_set_column_addr(dev, 0, dev->width - 1);
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ssd1306_set_page_addr(dev, 0, dev->height / 8 - 1);
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}
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switch (dev->protocol) {
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#if (SSD1306_I2C_SUPPORT)
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case SSD1306_PROTO_I2C:
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for (i = 0; i < len; i++) {
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if(dev->screen == SH1106_SCREEN) sh1106_go_coordinate(dev,0,i/dev->width);
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i2c_start();
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if (!i2c_write(dev->addr << 1)) {
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debug("Error while xmitting I2C slave address\n");
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@ -227,14 +288,56 @@ int ssd1306_load_frame_buffer(const ssd1306_t *dev, uint8_t buf[])
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#endif
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#if (SSD1306_SPI4_SUPPORT)
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case SSD1306_PROTO_SPI4:
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gpio_write(dev->dc_pin, true); // data mode
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gpio_write(dev->cs_pin, false);
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if (buf)
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spi_transfer(SPI_BUS, buf, NULL, len, SPI_8BIT);
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if(dev->screen == SSD1306_SCREEN)
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{
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gpio_write(dev->dc_pin, true); // data mode
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if (buf)
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spi_transfer(SPI_BUS, buf, NULL, len, SPI_8BIT);
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else
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spi_repeat_send_8(SPI_BUS,0,len);
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}
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else
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for (i = 0; i < len; i ++) {
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spi_transfer_8(SPI_BUS, 0);
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{
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for (i = 0 ; i < (dev->height/8) ; i++) {
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sh1106_go_coordinate(dev,0,i);
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gpio_write(dev->dc_pin, true); // data mode
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gpio_write(dev->cs_pin, false);
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if (buf)
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spi_transfer(SPI_BUS, &buf[dev->width*i], NULL, dev->width, SPI_8BIT);
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else
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spi_repeat_send_8(SPI_BUS,0,dev->width);
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}
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}
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gpio_write(dev->cs_pin, true);
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break;
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#endif
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#if (SSD1306_SPI3_SUPPORT)
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case SSD1306_PROTO_SPI3:
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gpio_write(dev->cs_pin, false);
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if(dev->screen == SSD1306_SCREEN)
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{
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spi_set_command(SPI_BUS,1,1); // data mode
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if (buf)
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spi_transfer(SPI_BUS, buf, NULL, len, SPI_8BIT);
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else
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spi_repeat_send_8(SPI_BUS,0,len);
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}
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else
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{
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for (i = 0 ; i < (dev->height/8) ; i++) {
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sh1106_go_coordinate(dev,0,i);
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spi_set_command(SPI_BUS,1,1); // data mode
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gpio_write(dev->cs_pin, false);
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if (buf)
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for (j = 0 ; j < dev->width ; j++)
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spi_transfer_8(SPI_BUS, buf[dev->width*i+j]);
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else
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for (j = 0 ; j < dev->width ; j++)
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spi_transfer_8(SPI_BUS, buf[dev->width*i+j]);
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}
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}
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spi_clear_command(SPI_BUS);
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gpio_write(dev->cs_pin, true);
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break;
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#endif
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@ -271,17 +374,44 @@ int ssd1306_set_display_offset(const ssd1306_t *dev, uint8_t offset)
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return ssd1306_command(dev, offset);
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}
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int sh1106_set_charge_pump_voltage(const ssd1306_t *dev, sh1106_voltage_t select)
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{
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if (dev->screen == SSD1306_SCREEN)
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{
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debug("Unsupported screen type");
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return -ENOTSUP ;
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}
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return ssd1306_command(dev, select | SH1106_CHARGE_PUMP_VALUE);
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}
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int ssd1306_set_charge_pump_enabled(const ssd1306_t *dev, bool enabled)
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{
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int err = 0;
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if ((err = ssd1306_command(dev, SSD1306_SET_CHARGE_PUMP)))
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return err;
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return ssd1306_command(dev, enabled ? SSD1306_CHARGE_PUMP_EN : SSD1306_CHARGE_PUMP_DIS);
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switch (dev->screen) {
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case SH1106_SCREEN:
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if ((err = ssd1306_command(dev, SH1106_SET_CHARGE_PUMP)))
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return err;
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return ssd1306_command(dev, enabled ? SH1106_CHARGE_PUMP_EN : SH1106_CHARGE_PUMP_DIS);
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break;
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case SSD1306_SCREEN:
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if ((err = ssd1306_command(dev, SSD1306_SET_CHARGE_PUMP)))
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return err;
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return ssd1306_command(dev, enabled ? SSD1306_CHARGE_PUMP_EN : SSD1306_CHARGE_PUMP_DIS);
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break;
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default:
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debug("Unsupported screen type");
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return -ENOTSUP;
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}
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}
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int ssd1306_set_mem_addr_mode(const ssd1306_t *dev, ssd1306_mem_addr_mode_t mode)
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{
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if (dev->screen == SH1106_SCREEN)
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{
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debug("Unsupported screen type");
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return -ENOTSUP ;
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}
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int err = 0;
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if ((err = ssd1306_command(dev, SSD1306_SET_MEM_ADDR_MODE)))
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return err;
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@ -390,7 +520,6 @@ int ssd1306_set_whole_display_lighting(const ssd1306_t *dev, bool light)
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return ssd1306_command(dev, light ? SSD1306_SET_ENTIRE_DISP_ON : SSD1306_SET_ENTIRE_DISP_OFF);
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}
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/* one byte of xbm - 8 dots in line of picture source
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* one byte of fb - 8 rows for 1 column of screen
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*/
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