Display UI: ST7735 Treiber + Frame-Scroller + Speicheranzeige
- ST7735 SPI-Treiber für 0.96 Zoll Display (80x160 Pixel) - ASCII-Font 6x8 mit Text-Ausgabe - Frame-Counter (gross, rot) - SD-Speicher-Balken (grün/gelb/rot) - Frame-Scroller: rollende Liste der letzten 7 Frames - RSSI-Farbbalken (rot/gelb/grün) - Message-Type (B=BSM, C=CAM, D=DENM) - BSSID Hex + Kanal/RSSI - Display UI Task aktualisiert alle 2 Sekunden - Frame Writer sendet Frames an Scroller Queue - Channel Hopper aktualisiert g_v2x_channel_idx
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Clawdia
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/**
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* Frame-Scroller — rollende Liste der letzten Frames
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*
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* Zeigt bis zu 7 Frames an, jeder Frame = 1 Zeile (12px hoch):
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* [RSSI-Balk] X #####-#####-##### CH:161 RSSI:-45
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*
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* Der Scroller aktualisiert sich nur wenn sich ein Frame ändert.
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*/
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#include "esp_log.h"
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#include "v2x_display.h"
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#include "esp_lcd_panel_ops.h"
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/queue.h"
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extern esp_lcd_panel_handle_t s_panel;
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extern bool s_initialized;
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static const char *TAG = "v2x-scroller";
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/* Scroller-Konfiguration */
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#define SCROLLER_FRAMES_VISIBLE 7 /* Frames sichtbar */
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#define SCROLLER_LINE_HEIGHT 13 /* Pixel pro Zeile */
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#define SCROLLER_START_Y 28 /* Erste Zeile beginnt bei Y=28 */
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#define SCROLLER_MAX_ENTRIES 64 /* Frames im Buffer */
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/* Frame-Daten für den Scroller */
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typedef struct {
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char msg_char; /* 'B', 'C', 'D', '?' */
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int8_t rssi; /* RSSI dBm */
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uint8_t ch; /* Kanal */
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char bssid_hex[9]; /* #####-#####-##### */
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} scroller_entry_t;
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static scroller_entry_t s_entries[SCROLLER_MAX_ENTRIES];
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static uint32_t s_entry_count = 0;
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/* RSSI-Balk als ASCII (20 Zeichen breit) */
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static void rssi_to_bar(int8_t rssi, char *bar, int len)
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{
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if (rssi <= -100) rssi = -100;
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if (rssi >= -20) rssi = -20;
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float pct = (float)(rssi + 100) / 80.0f;
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int filled = (int)(pct * 20);
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for (int i = 0; i < len - 1; i++) {
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bar[i] = (i < filled) ? '\x5C' : '\xC1'; /* ▌ und ░ (block chars) */
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}
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bar[len - 1] = '\0';
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}
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/* BSSID als #####-#####-##### hex */
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static void bssid_to_str(const uint8_t *bssid, char *str)
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{
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snprintf(str, 14, "%02X-%02X-%02X-%02X-%02X-%02X",
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bssid[0], bssid[1], bssid[2], bssid[3], bssid[4], bssid[5]);
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}
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/* Scroller-Eintrag hinzufügen */
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void scroller_add_entry(uint8_t msg_type, int8_t rssi, uint8_t ch, const uint8_t *bssid)
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{
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scroller_entry_t *e = &s_entries[s_entry_count % SCROLLER_MAX_ENTRIES];
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/* Msg-Type Character */
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switch (msg_type) {
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case 1: e->msg_char = 'B'; break; /* BSM */
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case 2: e->msg_char = 'C'; break; /* CAM */
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case 3: e->msg_char = 'D'; break; /* DENM */
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default: e->msg_char = '?'; break;
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}
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e->rssi = rssi;
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e->ch = ch;
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if (bssid) {
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bssid_to_str(bssid, e->bssid_hex);
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} else {
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snprintf(e->bssid_hex, 14, "----------");
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}
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s_entry_count++;
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}
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/* Scroller neu zeichnen (vollständig) */
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void scroller_redraw(void)
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{
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if (!s_initialized) return;
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int32_t total = s_entry_count;
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int start = (total > SCROLLER_FRAMES_VISIBLE) ?
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(total - SCROLLER_FRAMES_VISIBLE) : 0;
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/* Hintergrund zeichnen */
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int total_h = SCROLLER_FRAMES_VISIBLE * SCROLLER_LINE_HEIGHT;
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v2x_display_rect(0, SCROLLER_START_Y, DISP_W, total_h, DISP_COLOR_BLACK, true);
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/* Zeilenweise rendern (von oben nach unten = neueste Frames zuerst) */
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for (int i = SCROLLER_FRAMES_VISIBLE - 1; i >= 0; i--) {
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int idx = (start + i) % SCROLLER_MAX_ENTRIES;
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scroller_entry_t *e = &s_entries[idx];
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int y = SCROLLER_START_Y + (SCROLLER_FRAMES_VISIBLE - 1 - i) * SCROLLER_LINE_HEIGHT;
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/* RSSI-Farbbalk links (5px breit, 11px hoch) */
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uint16_t bar_color = DISP_COLOR_RED;
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float pct = (float)(e->rssi + 100) / 80.0f;
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if (pct > 0.6f) bar_color = DISP_COLOR_GREEN;
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else if (pct > 0.3f) bar_color = DISP_COLOR_YELLOW;
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v2x_display_rect(2, y + 1, 5, 11, bar_color, true);
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/* Msg-Type Zeichen (grün/cyan/rot/gray) */
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uint16_t msg_color = DISP_COLOR_GRAY;
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if (e->msg_char == 'B') msg_color = DISP_COLOR_GREEN;
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else if (e->msg_char == 'C') msg_color = DISP_COLOR_CYAN;
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else if (e->msg_char == 'D') msg_color = DISP_COLOR_RED;
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char msg_line[2] = { e->msg_char, '\0' };
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v2x_display_text(9, y + 1, msg_line, msg_color, FONT_6x8);
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/* BSSID als Hex (blau) */
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v2x_display_text(16, y + 1, e->bssid_hex, DISP_COLOR_BLUE, FONT_6x8);
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/* Kanal + RSSI (weiß) */
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char ch_buf[20];
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snprintf(ch_buf, sizeof(ch_buf), "CH:%d %3d", e->ch, e->rssi);
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v2x_display_text(60, y + 1, ch_buf, DISP_COLOR_WHITE, FONT_6x8);
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}
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}
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/* Geänderte Zeile neu zeichnen (nur die betroffene Zeile — schnell) */
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void scroller_redraw_line(uint32_t entry_idx)
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{
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if (!s_initialized) return;
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int32_t total = s_entry_count;
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if (entry_idx < (total > SCROLLER_FRAMES_VISIBLE ? total - SCROLLER_FRAMES_VISIBLE : 0)) {
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return; /* Zu alt, nicht sichtbar */
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}
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int start = (total > SCROLLER_FRAMES_VISIBLE) ?
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(total - SCROLLER_FRAMES_VISIBLE) : 0;
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int line_idx = (int)(entry_idx - start);
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if (line_idx < 0 || line_idx >= SCROLLER_FRAMES_VISIBLE) return;
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int idx = entry_idx % SCROLLER_MAX_ENTRIES;
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scroller_entry_t *e = &s_entries[idx];
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int y = SCROLLER_START_Y + (SCROLLER_FRAMES_VISIBLE - 1 - line_idx) * SCROLLER_LINE_HEIGHT;
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/* Zeile löschen */
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v2x_display_rect(0, y, DISP_W, SCROLLER_LINE_HEIGHT, DISP_COLOR_BLACK, true);
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/* Neu zeichnen */
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uint16_t bar_color = DISP_COLOR_RED;
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float pct = (float)(e->rssi + 100) / 80.0f;
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if (pct > 0.6f) bar_color = DISP_COLOR_GREEN;
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else if (pct > 0.3f) bar_color = DISP_COLOR_YELLOW;
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v2x_display_rect(2, y + 1, 5, 11, bar_color, true);
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uint16_t msg_color = DISP_COLOR_GRAY;
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if (e->msg_char == 'B') msg_color = DISP_COLOR_GREEN;
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else if (e->msg_char == 'C') msg_color = DISP_COLOR_CYAN;
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else if (e->msg_char == 'D') msg_color = DISP_COLOR_RED;
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char msg_line[2] = { e->msg_char, '\0' };
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v2x_display_text(9, y + 1, msg_line, msg_color, FONT_6x8);
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v2x_display_text(16, y + 1, e->bssid_hex, DISP_COLOR_BLUE, FONT_6x8);
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char ch_buf[20];
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snprintf(ch_buf, sizeof(ch_buf), "CH:%d %3d", e->ch, e->rssi);
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v2x_display_text(60, y + 1, ch_buf, DISP_COLOR_WHITE, FONT_6x8);
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}
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