74 lines
1.7 KiB
C
74 lines
1.7 KiB
C
#include "mgos.h"
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#include "mongoose-touch.h"
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#ifdef MGOS_PLATFORM_ESP32
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#include <esp_wifi.h>
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#endif
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static long map(long x, long in_min, long in_max, long out_min, long out_max)
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{
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return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
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}
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// Returns a value between 0 and 100%
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static uint8_t widget_wifi_signal() {
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#ifdef MGOS_PLATFORM_ESP32
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wifi_ap_record_t info;
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if(0 != esp_wifi_sta_get_ap_info(&info))
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return 0;
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if(info.rssi <= -100)
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return 0;
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if (info.rssi >= -50)
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return 100;
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return 2 * (info.rssi + 100);
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#endif
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return 100;
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}
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static void widget_wifi_render(struct widget_t *w, void *ev_data) {
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uint8_t x, signal;
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mgos_ili9341_set_window(w->x, w->y, w->x+w->w-1, w->y+w->h-1);
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mgos_ili9341_set_fgcolor565(ILI9341_DARKGREY);
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mgos_ili9341_fillTriangle(2, 18, 18, 18, 18, 2);
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// Map signal strength from [0..100] to [0..16]
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signal = widget_wifi_signal();
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x = map(signal, 0, 100, 0, 16);
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if (x>0) {
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mgos_ili9341_set_fgcolor565(ILI9341_WHITE);
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mgos_ili9341_fillTriangle(2, 18, 2+x, 18, 2+x, 18-x);
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}
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// Draw an X in the corner if we don't have an IP address.
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if (mgos_wifi_get_status() != MGOS_WIFI_IP_ACQUIRED) {
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mgos_ili9341_set_fgcolor565(ILI9341_RED);
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mgos_ili9341_drawLine(11, 11, 16, 16);
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mgos_ili9341_drawLine(11, 16, 16, 11);
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}
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(void) ev_data;
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}
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void widget_wifi_ev(int ev, struct widget_t *w, void *ev_data) {
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if (!w)
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return;
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switch(ev) {
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case EV_WIDGET_CREATE:
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break;
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case EV_WIDGET_DRAW:
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case EV_WIDGET_REDRAW:
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case EV_WIDGET_TIMER:
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widget_wifi_render(w, ev_data);
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break;
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case EV_WIDGET_TOUCH_UP:
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case EV_WIDGET_TOUCH_DOWN:
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case EV_WIDGET_DESTROY:
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default: // EV_WIDGET_NONE
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break;
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}
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}
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