boards: Add an SPI and ST7789 driver
This code is somewhat hacky and it (currently) hard coded for PineTime but it's brings the demo together nicely... so let's capture progress here!pull/1/head
Daniel Thompson
parent
660aa3247c
commit
0125b3e49b
334
src/boards.c
334
src/boards.c
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@ -23,6 +23,7 @@
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*/
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#include "boards.h"
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#include "nrf_spi.h"
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#include "nrf_pwm.h"
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#include "nrf_wdt.h"
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#include "app_scheduler.h"
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@ -40,6 +41,12 @@
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void neopixel_teardown(void);
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#endif
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#ifdef ST7789_SPI_DISPLAY
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void st7789_init(void);
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void st7789_state(int state);
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void st7789_teardown(void);
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#endif
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//------------- IMPLEMENTATION -------------//
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void button_init(uint32_t pin)
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{
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@ -102,10 +109,19 @@ void board_init(void)
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// Configure Systick for led blinky
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NVIC_SetPriority(SysTick_IRQn, 7);
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SysTick_Config(SystemCoreClock/1000);
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// Bring up the display (if there is one)
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#ifdef ST7789_SPI_DISPLAY
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st7789_init();
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#endif
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}
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void board_teardown(void)
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{
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#ifdef ST7789_SPI_DISPLAY
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st7789_teardown();
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#endif
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// Disable systick, turn off LEDs
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SysTick->CTRL = 0;
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@ -116,7 +132,7 @@ void board_teardown(void)
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#if defined(LED_NEOPIXEL) || defined(LED_RGB_RED_PIN)
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neopixel_teardown();
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#endif
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// Button
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// Stop RTC1 used by app_timer
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@ -337,6 +353,7 @@ void led_state(uint32_t state)
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#else // LEDS_NUMBER > 0
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void led_state(uint32_t state)
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{
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st7789_state(state);
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}
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#endif
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@ -481,6 +498,321 @@ void neopixel_write (uint8_t *pixels)
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}
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#endif
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#ifdef ST7789_SPI_DISPLAY
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#define SPIx NRF_SPI0
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#define SPI_MODE NRF_SPI_MODE_3
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#define SPI_SCK 2
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#define SPI_MOSI 3
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#define DISP_SS 25
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#define DISP_DC 18
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#define DISP_RESET 26
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#define BACKLIGHT 14 /* lowest level */
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void spi_init(void)
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{
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nrf_gpio_pin_write(SPI_SCK, SPI_MODE >= 2);
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nrf_gpio_cfg(SPI_SCK, NRF_GPIO_PIN_DIR_OUTPUT, NRF_GPIO_PIN_INPUT_CONNECT,
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NRF_GPIO_PIN_NOPULL, NRF_GPIO_PIN_S0S1, NRF_GPIO_PIN_NOSENSE);
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nrf_gpio_pin_clear(SPI_MOSI);
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nrf_gpio_cfg_output(SPI_MOSI);
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nrf_spi_pins_set(SPIx, SPI_SCK, SPI_MOSI, NRF_SPI_PIN_NOT_CONNECTED);
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nrf_spi_frequency_set(SPIx, NRF_SPI_FREQ_8M);
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nrf_spi_configure(SPIx, SPI_MODE, NRF_SPI_BIT_ORDER_MSB_FIRST);
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nrf_spi_enable(SPIx);
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}
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void spi_teardown(void)
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{
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/* no need to tear down SCK and MOSI - output pins can be left alone */
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nrf_spi_event_clear(SPIx, NRF_SPI_EVENT_READY);
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nrf_spi_disable(SPIx);
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nrf_gpio_cfg_default(SPI_MOSI);
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nrf_gpio_cfg_default(SPI_SCK);
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}
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void spi_write(const uint8_t *data, unsigned len)
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{
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const uint8_t *endp = data + len;
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/* paranoid... but worthwhile due to the havoc this could cause */
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nrf_spi_event_clear(SPIx, NRF_SPI_EVENT_READY);
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/* send first character */
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nrf_spi_txd_set(SPIx, *data++);
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/* TXD is double buffers so we can xmit and then poll for the event */
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while (data < endp) {
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nrf_spi_txd_set(SPIx, *data++);
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while (!nrf_spi_event_check(SPIx, NRF_SPI_EVENT_READY)) {}
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nrf_spi_event_clear(SPIx, NRF_SPI_EVENT_READY);
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(void) nrf_spi_rxd_get(SPIx);
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}
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/* wait for the final character */
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while (!nrf_spi_event_check(SPIx, NRF_SPI_EVENT_READY)) {}
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nrf_spi_event_clear(SPIx, NRF_SPI_EVENT_READY);
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(void) nrf_spi_rxd_get(SPIx);
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}
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#define NOP 0x00
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#define SWRESET 0x01
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#define SLPOUT 0x11
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#define NORON 0x13
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#define INVOFF 0x20
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#define INVON 0x21
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#define DISPON 0x29
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#define CASET 0x2a
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#define RASET 0x2b
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#define RAMWR 0x2c
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#define COLMOD 0x3a
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#define MADCTL 0x36
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struct st7789_cmd {
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uint8_t cmd;
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const uint8_t *data;
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uint8_t len;
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};
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const static struct st7789_cmd st7789_init_data[] = {
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{ COLMOD, (uint8_t *) "\x05", 1 }, // MCU will send 16-bit RGB565
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{ MADCTL, (uint8_t *) "\x00", 1 }, // Left to right, top to bottom
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//{ INVOFF, NULL }, // Results in odd palette
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{ INVON, NULL },
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{ NORON, NULL },
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{ NOP, NULL },
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};
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static void st7789_send(uint8_t cmd, const uint8_t *data, unsigned len)
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{
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nrf_gpio_pin_clear(DISP_SS);
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// this means nop cannot be sent... but helps with big RAMWR dumps
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if (cmd) {
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nrf_gpio_pin_clear(DISP_DC);
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spi_write(&cmd, 1);
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}
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if (data) {
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nrf_gpio_pin_set(DISP_DC);
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spi_write(data, len);
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}
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nrf_gpio_pin_set(DISP_SS);
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}
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void st7789_state(int state)
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{
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bool topclip = true;
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bool bottomclip = true;
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switch(state) {
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case STATE_BOOTLOADER_STARTED:
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break;
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case STATE_BLE_DISCONNECTED:
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topclip = false;
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/* fallthrough */
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case STATE_BLE_CONNECTED:
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bottomclip = false;
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break;
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default:
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return;
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}
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uint8_t linebuffer[2*240];
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// 1-bit RLE, generated from res/pinedfu.png, 1085 bytes
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const uint8_t rle[] = {
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0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0,
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0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0,
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0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0x14, 0x8, 0x8, 0x3,
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0x2b, 0x3, 0xac, 0xd, 0x6, 0x3, 0x2b, 0x3, 0xab, 0xe, 0x6, 0x3,
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0x2b, 0x3, 0xab, 0x4, 0x8, 0x2, 0x6, 0x3, 0x2b, 0x3, 0xaa, 0x4,
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0x11, 0x3, 0x2b, 0x3, 0xaa, 0x3, 0x10, 0xb, 0x6, 0x7, 0xb, 0x3,
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0x3, 0x4, 0x1, 0xb, 0xa4, 0x3, 0x10, 0xb, 0x4, 0xb, 0x9, 0x3,
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0x1, 0x6, 0x1, 0xb, 0xa4, 0x3, 0x10, 0xb, 0x4, 0xc, 0x8, 0xa,
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0x1, 0xb, 0xa4, 0x4, 0x11, 0x3, 0xa, 0x2, 0x7, 0x4, 0x7, 0x6,
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0x7, 0x3, 0xab, 0x5, 0xf, 0x3, 0x14, 0x3, 0x7, 0x4, 0x9, 0x3,
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0xac, 0x9, 0xa, 0x3, 0x15, 0x3, 0x6, 0x4, 0x9, 0x3, 0xad, 0xa,
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0x8, 0x3, 0x15, 0x3, 0x6, 0x3, 0xa, 0x3, 0xb0, 0x8, 0x7, 0x3,
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0xd, 0xb, 0x6, 0x3, 0xa, 0x3, 0xb4, 0x5, 0x6, 0x3, 0xb, 0xd,
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0x6, 0x3, 0xa, 0x3, 0xb6, 0x4, 0x5, 0x3, 0xa, 0xe, 0x6, 0x3,
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0xa, 0x3, 0xb7, 0x3, 0x5, 0x3, 0x9, 0x5, 0x7, 0x3, 0x6, 0x3,
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0xa, 0x3, 0xb7, 0x3, 0x5, 0x3, 0x9, 0x3, 0x9, 0x3, 0x6, 0x3,
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0xa, 0x3, 0xb7, 0x3, 0x5, 0x3, 0x9, 0x3, 0x9, 0x3, 0x6, 0x3,
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0xa, 0x3, 0xb6, 0x4, 0x5, 0x3, 0x9, 0x3, 0x8, 0x4, 0x6, 0x3,
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0xa, 0x3, 0xaa, 0x2, 0x9, 0x4, 0x6, 0x4, 0x8, 0x4, 0x5, 0x6,
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0x6, 0x3, 0xa, 0x4, 0xa9, 0xf, 0x7, 0x8, 0x4, 0xe, 0x6, 0x3,
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0xb, 0x8, 0xa4, 0xe, 0x8, 0x8, 0x5, 0x9, 0x1, 0x3, 0x6, 0x3,
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0xb, 0x8, 0xa6, 0x9, 0xd, 0x6, 0x6, 0x6, 0x3, 0x3, 0x6, 0x3,
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0xd, 0x6, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0,
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0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0,
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0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0x2c, 0x2, 0xed, 0x4,
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0xa6, 0x1, 0x44, 0x6, 0xa4, 0x3, 0x42, 0x8, 0xa2, 0x5, 0x40, 0xa,
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0xa0, 0x7, 0x3e, 0xc, 0x9e, 0x7, 0x3e, 0xe, 0x93, 0x1, 0x8, 0x7,
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0x3e, 0x10, 0x92, 0x2, 0x6, 0x7, 0x3e, 0x12, 0x91, 0x3, 0x4, 0x7,
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0x3e, 0x14, 0x90, 0x4, 0x2, 0x7, 0x3e, 0x16, 0x8f, 0xc, 0x3e, 0x18,
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0x8e, 0xb, 0x3f, 0x18, 0x8e, 0xa, 0x42, 0x14, 0x90, 0x9, 0x37, 0x2,
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0xc, 0x10, 0xc, 0x2, 0x84, 0x9, 0x36, 0x5, 0xc, 0xc, 0xc, 0x5,
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0x83, 0xa, 0x35, 0x7, 0xc, 0x8, 0xc, 0x7, 0x83, 0xb, 0x33, 0xa,
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0xc, 0x4, 0xc, 0xa, 0x82, 0xc, 0x32, 0xc, 0x18, 0xc, 0x82, 0xd,
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0x30, 0xf, 0x14, 0xf, 0xbe, 0x11, 0x10, 0x11, 0xbe, 0xf, 0x14, 0xf,
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0xbd, 0xe, 0x18, 0xe, 0xbc, 0xc, 0xc, 0x4, 0xc, 0xc, 0xbb, 0xb,
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0xc, 0x8, 0xc, 0xb, 0xba, 0x9, 0xb, 0xe, 0xb, 0x9, 0xba, 0x7,
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0xb, 0x12, 0xb, 0x7, 0xb9, 0x6, 0xa, 0x18, 0xa, 0x6, 0xb8, 0x3,
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0xb, 0x1c, 0xa, 0x4, 0xc4, 0x20, 0xa, 0x2, 0xc2, 0x24, 0xc9, 0x2a,
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0xc4, 0x2e, 0xbf, 0x34, 0xba, 0x38, 0xb7, 0x3a, 0xab, 0x1, 0xb, 0x38,
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0xa, 0x2, 0xa0, 0x4, 0xa, 0x34, 0xa, 0x4, 0xa0, 0x6, 0xb, 0x2e,
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0xb, 0x6, 0xa0, 0x9, 0xa, 0x2a, 0xa, 0x9, 0xa0, 0xb, 0xb, 0x24,
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0xb, 0xb, 0xa0, 0xd, 0xb, 0x20, 0xb, 0xd, 0xa0, 0xf, 0xb, 0x1c,
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0xb, 0xf, 0xa0, 0x12, 0xa, 0x18, 0xa, 0x12, 0xa0, 0x14, 0xb, 0x12,
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0xb, 0x14, 0xa0, 0x16, 0xb, 0xe, 0xb, 0x16, 0xa0, 0x18, 0xc, 0x8,
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0xc, 0x18, 0xa0, 0x1b, 0xb, 0x4, 0xb, 0x1b, 0xa0, 0x1d, 0x16, 0x1d,
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0xa0, 0x20, 0x10, 0x20, 0xa0, 0x20, 0x10, 0x20, 0xa0, 0x1f, 0x12, 0x1f,
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0xa0, 0x1c, 0x17, 0x1d, 0xa0, 0x1a, 0xc, 0x4, 0xb, 0x1b, 0xa0, 0x18,
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0xc, 0x8, 0xc, 0x18, 0xa0, 0x16, 0xb, 0xf, 0xa, 0x16, 0xa0, 0x13,
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0xc, 0x12, 0xc, 0x13, 0xa0, 0x11, 0xc, 0x16, 0xb, 0x12, 0xa0, 0xf,
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0xc, 0x1a, 0xc, 0xf, 0xa0, 0xd, 0xb, 0x20, 0xb, 0xd, 0xa0, 0xa,
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0xc, 0x24, 0xc, 0xa, 0xa0, 0x8, 0xb, 0x2a, 0xb, 0x8, 0xa0, 0x6,
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0xb, 0x2e, 0xb, 0x6, 0xa0, 0x4, 0xb, 0x32, 0xb, 0x4, 0xa0, 0x1,
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0xc, 0x36, 0xc, 0x1, 0xaa, 0x3c, 0xb2, 0x40, 0xa0, 0x2, 0xd, 0x42,
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0xc, 0x2, 0x92, 0x3, 0xd, 0x3e, 0xd, 0x3, 0x93, 0x5, 0xc, 0x3a,
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0xc, 0x5, 0x94, 0x7, 0xc, 0x36, 0xc, 0x7, 0x95, 0x9, 0xb, 0x31,
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0xc, 0x9, 0x96, 0xb, 0xc, 0x2c, 0xc, 0xb, 0x96, 0xe, 0xb, 0x28,
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0xb, 0xd, 0x98, 0xf, 0xc, 0x22, 0xc, 0xf, 0x98, 0x12, 0xb, 0x1e,
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0xb, 0x12, 0x99, 0x13, 0xb, 0x19, 0xc, 0x13, 0x9a, 0x15, 0xb, 0x15,
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0xc, 0x15, 0x9b, 0x17, 0xb, 0x10, 0xb, 0x17, 0x9c, 0x19, 0xb, 0xc,
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0xb, 0x19, 0x9c, 0x1b, 0xc, 0x6, 0xc, 0x1a, 0x9e, 0x1d, 0xb, 0x2,
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0xb, 0x1d, 0x9e, 0x1f, 0x14, 0x1f, 0x9f, 0x21, 0xf, 0x20, 0xa0, 0x20,
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0x10, 0x20, 0xa1, 0x1e, 0x12, 0x1e, 0xa2, 0x1b, 0xb, 0x2, 0xb, 0x1b,
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0xa3, 0x18, 0xa, 0x7, 0xb, 0x18, 0xa4, 0x15, 0xc, 0xa, 0xb, 0x16,
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0xa4, 0x14, 0xa, 0x10, 0xa, 0x14, 0xa5, 0x10, 0xb, 0x14, 0xb, 0x10,
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0xa6, 0xe, 0xa, 0x1a, 0xa, 0xe, 0xa7, 0xa, 0xb, 0x1e, 0xb, 0xa,
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0xa8, 0x8, 0xb, 0x22, 0xb, 0x8, 0xa9, 0x5, 0xb, 0x26, 0xb, 0x5,
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0xaa, 0x3, 0xa, 0x2c, 0xa, 0x3, 0xb5, 0x30, 0xbe, 0x34, 0xba, 0x38,
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0xb7, 0x3a, 0xb8, 0x36, 0xbc, 0x32, 0xc0, 0x2e, 0xc4, 0x2a, 0xc9, 0x24,
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0xce, 0x20, 0xd2, 0x1c, 0xd6, 0x18, 0xdb, 0x12, 0xe0, 0xe, 0xe4, 0xa,
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0xe8, 0x6, 0xea, 0x6, 0xea, 0x6, 0xea, 0x6, 0xea, 0x6, 0xea, 0x6,
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0xea, 0x6, 0xea, 0x6, 0xea, 0x6, 0xea, 0x6, 0xea, 0x6, 0xea, 0x6,
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0xea, 0x6, 0xea, 0x6, 0xea, 0x6, 0x52, 0x6, 0xe7, 0xc, 0xe2, 0x10,
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0xde, 0x14, 0xdb, 0x16, 0xd9, 0x18, 0xd7, 0x1a, 0xd5, 0x1c, 0xd4, 0xb,
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0x3, 0xe, 0xd3, 0xc, 0x4, 0xe, 0xd2, 0xc, 0x6, 0xc, 0xd1, 0xd,
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0x7, 0xc, 0xd0, 0xd, 0x8, 0xb, 0xd0, 0xd, 0x9, 0xa, 0xd0, 0xd,
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0x4, 0x1, 0x6, 0x8, 0xd0, 0xd, 0x4, 0x2, 0x6, 0x7, 0xd0, 0xd,
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0x4, 0x3, 0x6, 0x6, 0xd0, 0x6, 0x3, 0x4, 0x4, 0x4, 0x5, 0x6,
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0xd0, 0x6, 0x4, 0x3, 0x4, 0x3, 0x6, 0x6, 0xd0, 0x6, 0x6, 0x1,
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0x4, 0x2, 0x6, 0x7, 0xd0, 0x7, 0xa, 0x1, 0x6, 0x8, 0xd0, 0x8,
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0xf, 0x9, 0xd0, 0xa, 0xb, 0xb, 0xd0, 0xb, 0x9, 0xc, 0xd0, 0xc,
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0x7, 0xd, 0xd0, 0xc, 0x7, 0xd, 0xd0, 0xb, 0x9, 0xc, 0xd0, 0xa,
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0xb, 0xb, 0xd0, 0x8, 0xf, 0x9, 0xd0, 0x7, 0xa, 0x1, 0x6, 0x8,
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0xd0, 0x6, 0x6, 0x1, 0x4, 0x2, 0x6, 0x7, 0xd0, 0x6, 0x4, 0x3,
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0x4, 0x3, 0x6, 0x6, 0xd0, 0x6, 0x3, 0x4, 0x4, 0x4, 0x5, 0x6,
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0xd0, 0xd, 0x4, 0x3, 0x6, 0x6, 0xd0, 0xd, 0x4, 0x2, 0x6, 0x7,
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0xd0, 0xd, 0x4, 0x1, 0x6, 0x8, 0xd0, 0xd, 0x9, 0xa, 0xd0, 0xd,
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0x8, 0xb, 0xd0, 0xd, 0x7, 0xc, 0xd1, 0xc, 0x6, 0xc, 0xd2, 0xc,
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0x4, 0xe, 0xd3, 0xb, 0x3, 0xe, 0xd4, 0x1c, 0xd5, 0x1a, 0xd7, 0x18,
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0xd9, 0x16, 0xdb, 0x14, 0xde, 0x10, 0xe2, 0xc, 0xe7, 0x6, 0xff, 0x0,
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0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0, 0xff, 0x0,
|
||||
0xff, 0x0, 0xff, 0x0, 0x85,
|
||||
};
|
||||
|
||||
// draw 240 x 240
|
||||
st7789_send(CASET, (uint8_t *) "\x00\x00\x00\xef", 4);
|
||||
st7789_send(RASET, (uint8_t *) "\x00\x00\x00\xef", 4);
|
||||
st7789_send(RAMWR, NULL, 0);
|
||||
|
||||
int y = 0;
|
||||
uint16_t bp = 0;
|
||||
uint16_t fg = 0xffff;
|
||||
const uint16_t bg = 0;
|
||||
uint16_t color = bg;
|
||||
|
||||
for (int i=0; i<sizeof(rle); i++) {
|
||||
uint8_t rl = rle[i];
|
||||
while (rl) {
|
||||
linebuffer[bp] = color >> 8;
|
||||
linebuffer[bp+1] = color & 0xff;
|
||||
bp += 2;
|
||||
rl -= 1;
|
||||
|
||||
if (bp >= sizeof(linebuffer)) {
|
||||
/* currently we have a single image which we clip to show different modes */
|
||||
if (topclip) {
|
||||
if (y < 48)
|
||||
memset(linebuffer, 0, sizeof(linebuffer));
|
||||
else
|
||||
memset(linebuffer, 0, 64*2);
|
||||
}
|
||||
if (bottomclip) {
|
||||
memset(linebuffer+2*(240-64), 0, 64*2);
|
||||
} else if (y == 179 && state == STATE_BLE_CONNECTED) {
|
||||
fg = 0x18ff;
|
||||
}
|
||||
|
||||
st7789_send(NOP, linebuffer, sizeof(linebuffer));
|
||||
bp = 0;
|
||||
y += 1;
|
||||
}
|
||||
}
|
||||
|
||||
if (color == bg)
|
||||
color = fg;
|
||||
else
|
||||
color = bg;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void st7789_init(void)
|
||||
{
|
||||
nrf_gpio_pin_set(DISP_SS);
|
||||
nrf_gpio_cfg_output(DISP_SS);
|
||||
spi_init();
|
||||
|
||||
nrf_gpio_cfg_output(DISP_DC);
|
||||
|
||||
/* deliver a reset */
|
||||
nrf_gpio_pin_clear(DISP_RESET);
|
||||
nrf_gpio_cfg_output(DISP_RESET);
|
||||
NRFX_DELAY_MS(10);
|
||||
nrf_gpio_pin_set(DISP_RESET);
|
||||
NRFX_DELAY_MS(125);
|
||||
|
||||
/* initialize the display */
|
||||
st7789_send(SLPOUT, NULL, 0);
|
||||
NRFX_DELAY_MS(10);
|
||||
for (const struct st7789_cmd *i = st7789_init_data; i->cmd != NOP; i++)
|
||||
st7789_send(i->cmd, i->data, i->len);
|
||||
|
||||
/* draw the initial screen content. this will take ~116ms so, with the
|
||||
* delay after the SLPOUT we will have complete the SLPOUT/SLPIN lock
|
||||
* out period during the update.
|
||||
*/
|
||||
st7789_state(STATE_BOOTLOADER_STARTED);
|
||||
|
||||
|
||||
/* enable the display and light the backlight */
|
||||
st7789_send(DISPON, NULL, 0);
|
||||
nrf_gpio_pin_clear(BACKLIGHT);
|
||||
nrf_gpio_cfg_output(BACKLIGHT);
|
||||
}
|
||||
|
||||
void st7789_teardown(void)
|
||||
{
|
||||
nrf_gpio_cfg_default(DISP_DC);
|
||||
nrf_gpio_cfg_default(DISP_RESET);
|
||||
nrf_gpio_cfg_default(BACKLIGHT);
|
||||
|
||||
spi_teardown();
|
||||
nrf_gpio_cfg_default(DISP_SS);
|
||||
}
|
||||
#endif
|
||||
|
||||
void wdt_init(void)
|
||||
{
|
||||
// 1 => keep running during a sleep, stop during SWD debug
|
||||
|
|
|
|||
|
|
@ -48,6 +48,8 @@
|
|||
#define RTS_PIN_NUMBER 0
|
||||
#define HWFC false
|
||||
|
||||
#define ST7789_SPI_DISPLAY
|
||||
|
||||
// Used as model string in OTA mode
|
||||
#define BLEDIS_MANUFACTURER "Pine64"
|
||||
#define BLEDIS_MODEL "PineTime"
|
||||
|
|
|
|||
Loading…
Reference in New Issue