add u8g2 and ui libs (#91)
* add u8g2 and ui libs * add display driver and usage example * not init display in test mode * change todo text * fix removed code * Target f2 (#107) * add ioc for flipperzero f2 * add generated f1 files to f2 * regenerate cubemx * invert initial state of led * blink backligh * shutdown backlight on idle
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coreglitch
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184
applications/display-u8g2/display-u8g2.c
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184
applications/display-u8g2/display-u8g2.c
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#include "u8g2/u8g2.h"
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#include "flipper.h"
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extern SPI_HandleTypeDef hspi1;
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// #define DEBUG 1
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// TODO rewrite u8g2 to pass thread-local context in this handlers
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static uint8_t u8g2_gpio_and_delay_stm32(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr) {
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switch(msg) {
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//Initialize SPI peripheral
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case U8X8_MSG_GPIO_AND_DELAY_INIT:
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/* HAL initialization contains all what we need so we can skip this part. */
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break;
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//Function which implements a delay, arg_int contains the amount of ms
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case U8X8_MSG_DELAY_MILLI:
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osDelay(arg_int);
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break;
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//Function which delays 10us
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case U8X8_MSG_DELAY_10MICRO:
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delay_us(10);
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break;
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//Function which delays 100ns
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case U8X8_MSG_DELAY_100NANO:
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asm("nop");
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break;
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// Function to define the logic level of the RESET line
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case U8X8_MSG_GPIO_RESET:
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#ifdef DEBUG
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fuprintf(log, "[u8g2] rst %d\n", arg_int);
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#endif
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// TODO change it to FuriRecord pin
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HAL_GPIO_WritePin(DISPLAY_RST_GPIO_Port, DISPLAY_RST_Pin, arg_int ? GPIO_PIN_SET : GPIO_PIN_RESET);
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break;
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default:
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#ifdef DEBUG
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fufuprintf(log, "[u8g2] unknown io %d\n", msg);
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#endif
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return 0; //A message was received which is not implemented, return 0 to indicate an error
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}
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return 1; // command processed successfully.
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}
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static uint8_t u8x8_hw_spi_stm32(u8x8_t *u8x8, uint8_t msg, uint8_t arg_int, void *arg_ptr){
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switch (msg) {
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case U8X8_MSG_BYTE_SEND:
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#ifdef DEBUG
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fuprintf(log, "[u8g2] send %d bytes %02X\n", arg_int, ((uint8_t*)arg_ptr)[0]);
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#endif
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// TODO change it to FuriRecord SPI
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HAL_SPI_Transmit(&hspi1, (uint8_t *)arg_ptr, arg_int, 10000);
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break;
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case U8X8_MSG_BYTE_SET_DC:
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#ifdef DEBUG
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fuprintf(log, "[u8g2] dc %d\n", arg_int);
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#endif
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// TODO change it to FuriRecord pin
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HAL_GPIO_WritePin(DISPLAY_DI_GPIO_Port, DISPLAY_DI_Pin, arg_int ? GPIO_PIN_SET : GPIO_PIN_RESET);
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break;
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case U8X8_MSG_BYTE_INIT:
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#ifdef DEBUG
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fuprintf(log, "[u8g2] init\n");
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#endif
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// TODO change it to FuriRecord pin
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HAL_GPIO_WritePin(DISPLAY_CS_GPIO_Port, DISPLAY_CS_Pin, GPIO_PIN_RESET);
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break;
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case U8X8_MSG_BYTE_START_TRANSFER:
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#ifdef DEBUG
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fuprintf(log, "[u8g2] start\n");
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#endif
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// TODO change it to FuriRecord pin
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HAL_GPIO_WritePin(DISPLAY_CS_GPIO_Port, DISPLAY_CS_Pin, GPIO_PIN_RESET);
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asm("nop");
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break;
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case U8X8_MSG_BYTE_END_TRANSFER:
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#ifdef DEBUG
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fuprintf(log, "[u8g2] end\n");
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#endif
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asm("nop");
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// TODO change it to FuriRecord pin
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HAL_GPIO_WritePin(DISPLAY_CS_GPIO_Port, DISPLAY_CS_Pin, GPIO_PIN_SET);
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break;
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default:
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#ifdef DEBUG
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fuprintf(log, "[u8g2] unknown xfer %d\n", msg);
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#endif
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return 0;
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}
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return 1;
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}
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typedef struct {
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SemaphoreHandle_t update; // queue to pass events from callback to app thread
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FuriRecordSubscriber* log; // app logger
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} DisplayCtx;
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static void handle_fb_change(const void* fb, size_t fb_size, void* raw_ctx) {
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DisplayCtx* ctx = (DisplayCtx*)raw_ctx; // make right type
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fuprintf(ctx->log, "[display_u8g2] change fb\n");
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// send update to app thread
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xSemaphoreGive(ctx->update);
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}
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void display_u8g2(void* p) {
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FuriRecordSubscriber* log = get_default_log();
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// TODO we need different app to contol backlight
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HAL_GPIO_WritePin(DISPLAY_BACKLIGHT_GPIO_Port, DISPLAY_BACKLIGHT_Pin, GPIO_PIN_SET);
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u8g2_t _u8g2;
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u8g2_Setup_st7565_erc12864_alt_f(&_u8g2, U8G2_R0, u8x8_hw_spi_stm32, u8g2_gpio_and_delay_stm32);
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u8g2_InitDisplay(&_u8g2); // send init sequence to the display, display is in sleep mode after this
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u8g2_SetContrast(&_u8g2, 36);
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if(!furi_create("u8g2_fb", (void*)&_u8g2, sizeof(_u8g2))) {
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fuprintf(log, "[display_u8g2] cannot create fb record\n");
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furiac_exit(NULL);
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}
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StaticSemaphore_t event_descriptor;
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// create stack-based counting semaphore
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SemaphoreHandle_t update = xSemaphoreCreateCountingStatic(255, 0, &event_descriptor);
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if(update == NULL) {
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fuprintf(log, "[display_u8g2] cannot create update semaphore\n");
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furiac_exit(NULL);
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}
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// save log and event queue in context structure
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DisplayCtx ctx = {.update = update, .log = log};
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// subscribe to record. ctx will be passed to handle_fb_change
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FuriRecordSubscriber* fb_record = furi_open(
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"u8g2_fb", false, false, handle_fb_change, NULL, &ctx
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);
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if(fb_record == NULL) {
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fuprintf(log, "[display] cannot open fb record\n");
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furiac_exit(NULL);
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}
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u8g2_t* u8g2 = (u8g2_t*)furi_take(fb_record);
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u8g2_SetPowerSave(u8g2, 0); // wake up display
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u8g2_SendBuffer(u8g2);
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furi_give(fb_record);
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while(1) {
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// wait for event
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if(xSemaphoreTake(update, 1000) == pdTRUE) {
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HAL_GPIO_WritePin(DISPLAY_BACKLIGHT_GPIO_Port, DISPLAY_BACKLIGHT_Pin, GPIO_PIN_SET);
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u8g2_t* u8g2 = (u8g2_t*)furi_take(fb_record);
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u8g2_SetPowerSave(u8g2, 0); // wake up display
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u8g2_SendBuffer(u8g2);
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furi_give(fb_record);
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} else {
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// TODO we need different app to contol backlight
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HAL_GPIO_WritePin(DISPLAY_BACKLIGHT_GPIO_Port, DISPLAY_BACKLIGHT_Pin, GPIO_PIN_RESET);
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}
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}
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}
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