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Display frequency in kHz on PortaPack #1756

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Display frequency in kHz on PortaPack #1756

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3cb069e
Add 'kHz' characters to 16x14 font.
martinling May 18, 2026
003244c
Display frequency in kHz.
martinling May 18, 2026
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18 changes: 13 additions & 5 deletions firmware/common/ui_portapack.c
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Original file line number Diff line number Diff line change
Expand Up @@ -227,11 +227,17 @@ static const uint8_t font_fixed_16x14_glyph_data[] = {
0x0e, 0x70, 0xfc, 0x3f, 0xfc, 0x3f, 0x0e, 0x70, 0x06, 0x60, 0x06, 0x60, 0x0e,
0x70, 0xfc, 0x3f, 0xf8, 0x1f, 0xf8, 0x1f, 0xfc, 0x3f, 0x0e, 0x70, 0x06, 0x60,
0x06, 0x60, 0x06, 0x60, 0x0e, 0x70, 0xfc, 0x7f, 0xf8, 0x6f, 0x00, 0x60, 0x06,
0x60, 0x0e, 0x70, 0xfc, 0x3f, 0xf8, 0x1f,
0x60, 0x0e, 0x70, 0xfc, 0x3f, 0xf8, 0x1f, 0x06, 0x00, 0x06, 0x00, 0x06, 0x00,
0x06, 0x00, 0x06, 0x60, 0x06, 0x78, 0x06, 0x1e, 0x86, 0x07, 0xfe, 0x01, 0xfe,
0x01, 0x86, 0x07, 0x06, 0x1e, 0x06, 0x78, 0x06, 0x60, 0x06, 0x60, 0x06, 0x60,
0x06, 0x60, 0x06, 0x60, 0x06, 0x60, 0xfe, 0x7f, 0xfe, 0x7f, 0x06, 0x60, 0x06,
0x60, 0x06, 0x60, 0x06, 0x60, 0x06, 0x60, 0x06, 0x60, 0x06, 0x60, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfe, 0x7f, 0xfe, 0x7f, 0x00, 0x78, 0x00,
0x1e, 0x80, 0x07, 0xe0, 0x01, 0x78, 0x00, 0x1e, 0x00, 0xfe, 0x7f, 0xfe, 0x7f,
};

static const ui_font_t font_fixed_16x14 =
{{16, 14}, font_fixed_16x14_glyph_data, 0x30, 10, (16 * 14 + 7U) >> 3};
{{16, 14}, font_fixed_16x14_glyph_data, 0x30, 13, (16 * 14 + 7U) >> 3};

static const uint8_t bitmap_amp_rx_data[] = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x06, 0x00, 0x60, 0x06, 0x00, 0x60,
Expand Down Expand Up @@ -525,9 +531,11 @@ static void portapack_ui_set_frequency(uint64_t frequency)

ui_point_t point = {240 - 20, 16};

uint64_t value = frequency;
char s[10];
for (int i = 0; i < 10; i++) {
uint64_t value = (frequency + 500) / 1000;
// We use these character codes for 'k', 'H' and 'z'
// which are the only letters defined in the font.
char s[10] = {0x3C, 0x3B, 0x3A};
for (int i = 3; i < 10; i++) {
const char c = '0' + value % 10;
s[i] = ((i >= 7) && (value == 0)) ? ' ' : c;
value /= 10;
Expand Down
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