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#8 Adapt BLE for Lilygo S3 REF: vroland#203
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@martinberlin
martinberlin committed Sep 12, 2022
1 parent a172754 commit 39d5ac0
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Showing 2 changed files with 2,261 additions and 47 deletions.
73 changes: 26 additions & 47 deletions examples/ble-image/main/gatt_server_receive.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@
#include "esp_bt_defs.h"
#include "esp_bt_main.h"
#include "esp_gatt_common_api.h"
#include "esp_wifi.h"
// EPD Driver
#include "epd_driver.h"
#include "epd_highlevel.h"
Expand Down Expand Up @@ -68,7 +69,7 @@ uint64_t start_time = 0;
uint32_t received_length = 0;

// Draws a progress bar when downloading (Just a demo: is faster without it)
// And also writes in the same framebuffer as the image
// DO NOT use for Lilygo S3 since makes consumption spikes that will reset your device
#define DOWNLOAD_PROGRESS_BAR true
uint8_t progressBarHeight = 4;

Expand Down Expand Up @@ -215,7 +216,16 @@ extern "C"
void app_main();
}


/**
* @brief Do not poweroff device for Lilygo S3 since turning it on generates up to 600 mA spikes when is done
* at the same time than BLE (Weird!)
* That means you cannot turn on -> draw something fast -> turn off or you will have a Reset
*/
void epaper_power_off() {
#ifndef CONFIG_EPD_BOARD_REVISION_LILYGO_S3_47
epd_poweroff();
#endif
}

void progressBar(long processed, long total)
{
Expand Down Expand Up @@ -543,47 +553,13 @@ static void gatts_profile_a_event_handler(esp_gatts_cb_event_t event, esp_gatt_i
/* if (received_events<3) {
esp_log_buffer_hex(GATTS_TAG, param->write.value, param->write.len);
} */
#if DOWNLOAD_PROGRESS_BAR
if (received_events%20 == 0) {
epd_poweron();
progressBar(img_buf_pos, received_length);
epd_poweroff();
}

if (gl_profile_tab[PROFILE_A_APP_ID].descr_handle == param->write.handle && param->write.len == 2){
uint16_t descr_value = param->write.value[1]<<8 | param->write.value[0];
if (descr_value == 0x0001){
if (a_property & ESP_GATT_CHAR_PROP_BIT_NOTIFY){
ESP_LOGI(GATTS_TAG, "notify enable");
uint8_t notify_data[15];
for (int i = 0; i < sizeof(notify_data); ++i)
{
notify_data[i] = i%0xff;
}
//the size of notify_data[] need less than MTU size
esp_ble_gatts_send_indicate(gatts_if, param->write.conn_id, gl_profile_tab[PROFILE_A_APP_ID].char_handle,
sizeof(notify_data), notify_data, false);
}
}else if (descr_value == 0x0002){
if (a_property & ESP_GATT_CHAR_PROP_BIT_INDICATE){
ESP_LOGI(GATTS_TAG, "indicate enable");
uint8_t indicate_data[15];
for (int i = 0; i < sizeof(indicate_data); ++i)
{
indicate_data[i] = i%0xff;
}
//the size of indicate_data[] need less than MTU size
esp_ble_gatts_send_indicate(gatts_if, param->write.conn_id, gl_profile_tab[PROFILE_A_APP_ID].char_handle,
sizeof(indicate_data), indicate_data, true);
}
}
else if (descr_value == 0x0000){
ESP_LOGI(GATTS_TAG, "notify/indicate disable ");
}else{
ESP_LOGE(GATTS_TAG, "unknown descr value");
esp_log_buffer_hex(GATTS_TAG, param->write.value, param->write.len);
}

epaper_power_off();
}
#endif
}
example_write_event_env(gatts_if, &a_prepare_write_env, param);
break;
Expand Down Expand Up @@ -666,7 +642,7 @@ static void gatts_profile_a_event_handler(esp_gatts_cb_event_t event, esp_gatt_i
case ESP_GATTS_CONNECT_EVT: {
epd_poweron();
epd_fullclear(&hl, temperature);
epd_poweroff();
epaper_power_off();
esp_ble_conn_update_params_t conn_params = {0};
memcpy(conn_params.bda, param->connect.remote_bda, sizeof(esp_bd_addr_t));
/* For the IOS system, please reference the apple official documents about the ble connection parameters restrictions. */
Expand Down Expand Up @@ -746,11 +722,14 @@ void write_text(EpdFontProperties font_prop, int x, int y, char* text) {
epd_clear_area(area);
epd_write_string(&FONT, text, &x, &y, fb, &font_props);
epd_hl_update_area(&hl, MODE_DU, temperature, area);
epd_poweroff();
epaper_power_off();
}

void app_main(void)
{
// Maximum power saving (But slower WiFi which we use only to callibrate RTC)
esp_wifi_set_ps(WIFI_PS_MAX_MODEM);

double gammaCorrection = 1.0 / gamma_value;
for (int gray_value =0; gray_value<256;gray_value++) {
gamme_curve[gray_value]= round (255*pow(gray_value/255.0, gammaCorrection));
Expand All @@ -759,27 +738,27 @@ void app_main(void)
hl = epd_hl_init(EPD_BUILTIN_WAVEFORM);
fb = epd_hl_get_framebuffer(&hl);

dither_space = (uint8_t *)heap_caps_malloc(EPD_WIDTH *16, MALLOC_CAP_SPIRAM);
dither_space = (uint8_t *)heap_caps_malloc(EPD_WIDTH *16, MALLOC_CAP_SPIRAM); // or MALLOC_CAP_DEFAULT
if (dither_space == NULL) {
ESP_LOGE("main", "Initial alloc ditherSpace failed!");
}

// Should be big enough to allocate the JPEG file size, width * height should suffice
source_buf = (uint8_t *)heap_caps_malloc(EPD_WIDTH * EPD_HEIGHT, MALLOC_CAP_SPIRAM);
// Should be big enough to allocate the JPEG file size, width * height should suffice alloc in external RAM: MALLOC_CAP_SPIRAM
source_buf = (uint8_t *)heap_caps_malloc(200000, MALLOC_CAP_SPIRAM);
if (source_buf == NULL) {
ESP_LOGE("main", "Initial alloc source_buf failed!");
}

font_props = epd_font_properties_default();
font_props.bg_color = 255;
//font_props.bg_color = 255; //warning: conversion from 'uint8_t' to 'unsigned char:4'
font_props.fg_color = 0;
font_props.flags = EPD_DRAW_ALIGN_LEFT;
int cursor_x = 10;
int cursor_y = epd_rotated_display_height() - 30;

write_text(font_props, cursor_x, cursor_y, "BLE initialized");
write_text(font_props, cursor_x, cursor_y, (char*) "BLE initialized");
cursor_y-= 40;
write_text(font_props, cursor_x, cursor_y, "Use Chrome only. Recommended: cale.es");
write_text(font_props, cursor_x, cursor_y, (char*) "Use Chrome only. Recommended: cale.es");

esp_err_t ret;

Expand Down
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