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Rewrite widget_battery_render() to assume full at 4100mV, clipping 'h' between [0,12]

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Pim van Pelt
2017-11-28 10:26:29 +01:00
parent 801e4435ce
commit c35d959c1a
1 changed files with 8 additions and 6 deletions
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12
src/widget_battery.c
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@ -23,7 +23,7 @@ static int widget_battery_getvoltage() {
static void widget_battery_render(struct widget_t *w, void *ev_data) { static void widget_battery_render(struct widget_t *w, void *ev_data) {
int mvolts; int mvolts;
color_t color; color_t color;
uint8_t h; int h;
if (!w) if (!w)
return; return;
@ -32,14 +32,16 @@ static void widget_battery_render(struct widget_t *w, void *ev_data) {
mvolts=widget_battery_getvoltage(); mvolts=widget_battery_getvoltage();
color=ILI9341_RED; color=ILI9341_RED;
if (mvolts<3400) mvolts=3400;
if (mvolts>3600) color=ILI9341_YELLOW; if (mvolts>3600) color=ILI9341_YELLOW;
if (mvolts>3900) color=ILI9341_GREEN; if (mvolts>3900) color=ILI9341_GREEN;
if (mvolts>4100) mvolts=4100;
h=12-12*(mvolts-3400)/(4100-3400);
mgos_ili9341_fillRect(5, 2, 3, 2, color); h=12-12*(mvolts-3400)/(4100-3400);
if (h<0) h=0;
if (h>12) h=12;
mgos_ili9341_drawFastHLine(5, 2, 3, color);
mgos_ili9341_fillRect(2, 4, 9, 14, color); mgos_ili9341_fillRect(2, 4, 9, 14, color);
if (h>0)
mgos_ili9341_fillRect(3, 5, 7, h, ILI9341_BLACK); mgos_ili9341_fillRect(3, 5, 7, h, ILI9341_BLACK);
mgos_ili9341_resetclipwin(); mgos_ili9341_resetclipwin();