DigitalInfinity/ESP32-PaxCounter
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curve plotter (experimental)

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This commit is contained in:
Verkehrsrot 2019-10-04 15:47:33 +02:00
parent 08c5a0ffe9
commit c56c973534
2 changed files with 36 additions and 10 deletions
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1
include/display.h
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@ -19,5 +19,6 @@ void oledScrollBufferLeft(uint8_t *buf, const uint16_t width,
int oledDrawPixel(uint8_t *buf, const uint16_t x, const uint16_t y,
const uint8_t dot);
void oledPlotCurve(uint16_t count, bool reset);
void oledRescaleBuffer(uint8_t *buf, const int factor);
#endif

45
src/display.cpp
View File

@ -48,7 +48,7 @@ static const char TAG[] = __FILE__;
// settings for curve plotter
#define DISPLAY_WIDTH 128 // Width in pixels of OLED-display, must be 32X
#define DISPLAY_HEIGHT 64 // Height in pixels of OLED-display, must be 16X
#define DISPLAY_HEIGHT 64 // Height in pixels of OLED-display, must be 64X
// helper array for converting month values to text
const char *printmonth[] = {"xxx", "Jan", "Feb", "Mar", "Apr", "May", "Jun",
@ -252,15 +252,15 @@ void draw_page(time_t t, uint8_t page) {
// LMiC event display, display inverse if sendqueue not empty
msgWaiting = uxQueueMessagesWaiting(LoraSendQueue);
if (msgWaiting)
dp_printf(0, 7, FONT_SMALL, 1, "%-17s", lmic_event_msg);
dp_printf(0, 7, FONT_SMALL, 1, "%-16s", lmic_event_msg);
else
dp_printf(0, 7, FONT_SMALL, 0, "%-17s", lmic_event_msg);
dp_printf(0, 7, FONT_SMALL, 0, "%-16s", lmic_event_msg);
// LORA datarate, display inverse if ADR disabled
if (cfg.adrmode)
dp_printf(108, 7, FONT_SMALL, 0, "%-4s",
dp_printf(100, 7, FONT_SMALL, 0, "%-4s",
getSfName(updr2rps(LMIC.datarate)));
else
dp_printf(108, 7, FONT_SMALL, 1, "%-4s",
dp_printf(100, 7, FONT_SMALL, 1, "%-4s",
getSfName(updr2rps(LMIC.datarate)));
#endif // HAS_LORA
@ -425,7 +425,8 @@ void oledScrollBufferLeft(uint8_t *buf, const uint16_t width,
void oledPlotCurve(uint16_t count, bool reset) {
static uint16_t last_count = 0, col = 0, row = 0, scalefactor = 1;
static uint16_t last_count = 0, col = 0, row = 0;
static int scalefactor = 1, oldsf = 1;
if ((last_count == count) && !reset)
return;
@ -440,12 +441,13 @@ void oledPlotCurve(uint16_t count, bool reset) {
oledDrawPixel(displaybuf, col, row, 0);
// re-scale, if necessary
while (((count / scalefactor) <= DISPLAY_HEIGHT) && (scalefactor > 1)) {
oldsf = scalefactor;
while (((count / scalefactor) <= DISPLAY_HEIGHT) && (scalefactor > 1))
scalefactor--;
}
while ((count / scalefactor) > DISPLAY_HEIGHT) {
while ((count / scalefactor) > DISPLAY_HEIGHT)
scalefactor++;
}
if (scalefactor != oldsf)
oledRescaleBuffer(displaybuf, scalefactor);
// set new dot
row = DISPLAY_HEIGHT - 1 - (count / scalefactor) % DISPLAY_HEIGHT;
@ -453,4 +455,27 @@ void oledPlotCurve(uint16_t count, bool reset) {
oledDrawPixel(displaybuf, col, row, 1);
}
void oledRescaleBuffer(uint8_t *buf, const int factor) {
if (!factor)
return;
uint64_t buf_col;
for (uint16_t col = 0; col < DISPLAY_WIDTH; col++) {
// convert column bytes from display buffer to uint64_t
buf_col = *(uint64_t *)&buf[col * DISPLAY_HEIGHT / 8];
if (factor < 0)
// shift left: scroll up = scale down
buf_col <= abs(factor);
else
// shift right: scroll down = scale up
buf_col >= abs(factor);
// write back uint64_t to uint8_t display buffer
*(uint64_t *)&buf[col * DISPLAY_HEIGHT / 8] = buf_col;
}
}
#endif // HAS_DISPLAY