coldcard/firmware
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

QR display

Browse Source
This commit is contained in:
Peter D. Gray 2023-06-12 11:26:13 -04:00 committed by scgbckbone
parent 094a3b5c52
commit 8c706e2a4c
1 changed files with 95 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

103
stm32/COLDCARD_Q1/modlcd.c
View File

@ -29,10 +29,25 @@
#define CASET 0x2a
#define RASET 0x2b
#define RAMWR 0x2c
#define DISPOFF 0x28
#define DISPON 0x29
#define SWAB16(n) (( ((n)>>8) | ((n) << 8) )&0xffff)
/* have not needed
static inline void wait_vsync(void) {
// PB11 is TEAR input: a positive pulse every 60Hz that
// corresponds to vertical blanking time
uint32_t timeout = 1000000;
for(; timeout; timeout--) {
if(mp_hal_pin_read(PIN_LCD_TEAR)) {
return;
}
}
//puts("TEAR timeout");
}
*/
static inline void write_cmd(const spi_t *spi, uint8_t cmd)
{
// write a command byte
@ -40,7 +55,7 @@ static inline void write_cmd(const spi_t *spi, uint8_t cmd)
mp_hal_pin_write(PIN_LCD_DATA_CMD, 0);
mp_hal_pin_write(PIN_LCD_CS, 0);
spi_transfer(spi, 1, (const uint8_t *)&cmd, NULL, SPI_TRANSFER_TIMEOUT(1));
HAL_SPI_Transmit(spi->spi, (uint8_t *)&cmd, 1, SPI_TRANSFER_TIMEOUT(1));
mp_hal_pin_write(PIN_LCD_CS, 1);
}
@ -50,17 +65,15 @@ static inline void write_cmd2(const spi_t *spi, uint8_t cmd, uint16_t arg1, uint
// Write a command byte, followed by 2 big-endian 16 bit arguments.
uint16_t args[2] = { SWAB16(arg1), SWAB16(arg2)};
// might be faster to avoid DMA for little transfers, so do that
mp_hal_pin_write(PIN_LCD_CS, 1);
mp_hal_pin_write(PIN_LCD_DATA_CMD, 0);
mp_hal_pin_write(PIN_LCD_CS, 0);
//spi_transfer(spi, 1, (const uint8_t *)&cmd, NULL, SPI_TRANSFER_TIMEOUT(1));
HAL_SPI_Transmit(spi->spi, (uint8_t *)&cmd, 1, SPI_TRANSFER_TIMEOUT(1));
mp_hal_pin_write(PIN_LCD_DATA_CMD, 1);
// faster to avoid DMA for little transfers, so do that
//spi_transfer(spi, 4, (const uint8_t *)&args, NULL, SPI_TRANSFER_TIMEOUT(4));
HAL_SPI_Transmit(spi->spi, (uint8_t *)&args, 4, SPI_TRANSFER_TIMEOUT(4));
mp_hal_pin_write(PIN_LCD_CS, 1);
@ -79,6 +92,20 @@ static void write_data(const spi_t *spi, int len, const uint8_t *data)
mp_hal_pin_write(PIN_LCD_CS, 1);
}
static void write_data_repeated(const spi_t *spi, int count, int len, const uint8_t *data)
{
// Send a bunch of pixel data, and repeat it N tim.es
mp_hal_pin_write(PIN_LCD_CS, 1);
mp_hal_pin_write(PIN_LCD_DATA_CMD, 1);
mp_hal_pin_write(PIN_LCD_CS, 0);
for(int i=0; i<count; i++) {
spi_transfer(spi, len, data, NULL, SPI_TRANSFER_TIMEOUT(len));
}
mp_hal_pin_write(PIN_LCD_CS, 1);
}
static void set_window(const spi_t *spi, int x, int y, int w, int h)
{
// set active window; controls where pixel data will show up on screen
@ -128,6 +155,67 @@ STATIC mp_obj_t send_packed(size_t n_args, const mp_obj_t *args)
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(send_packed_obj, 7, 7, send_packed);
STATIC mp_obj_t send_qr(size_t n_args, const mp_obj_t *args)
{
// Take a packed QR code, and rendered as black/white squares
// - expands it by "expand"
// - adds one-unit border to all sides
// - scan_w: scanline width (packed to mod 8)
//lcd.send_qr(self.spi, x, y, w, expand, scan_w, packed_data)
const uint16_t COL_WHITE = 0xffff;
const uint16_t COL_BLACK = 0x0000;
const spi_t *spi = spi_from_mp_obj(args[0]);
mp_int_t x = mp_obj_get_int(args[1]);
mp_int_t y = mp_obj_get_int(args[2]);
mp_int_t w = mp_obj_get_int(args[3]);
mp_int_t expand = mp_obj_get_int(args[4]);
mp_int_t scan_w = mp_obj_get_int(args[5]);
mp_buffer_info_t boxes;
mp_get_buffer_raise(args[6], &boxes, MP_BUFFER_READ);
if(boxes.len!= (scan_w*w) / 8) {
mp_raise_ValueError(NULL);
}
// operate line by line
const uint32_t W = (w+2) * expand;
uint16_t line[(w+2) * expand];
for(int i=0; i<W; i++) {
line[i] = COL_WHITE;
}
// top, bot blank lines
set_window(spi, x, y, W, expand);
write_data_repeated(spi, expand, sizeof(line), (const uint8_t *)line);
set_window(spi, x, y+W-expand, W, expand);
write_data_repeated(spi, expand, sizeof(line), (const uint8_t *)line);
const uint8_t *ptr=boxes.buf;
for(int Y=0; Y < w; Y++, ptr += (scan_w/8)) {
const uint8_t *p = ptr;
for(int X=0; X<w; ) {
for(uint8_t m = 0x80; m && (X <w); m >>= 1) {
uint16_t here = ((*p) & m) ? COL_BLACK : COL_WHITE;
for(int r=0; r<expand; r++) {
line[((1+X)*expand) + r] = here;
}
X++;
}
p++;
}
set_window(spi, x, y+((Y+1)*expand), W, expand);
write_data_repeated(spi, expand, sizeof(line), (const uint8_t *)line);
}
return mp_const_none;
}
MP_DEFINE_CONST_FUN_OBJ_VAR_BETWEEN(send_qr_obj, 7, 7, send_qr);
STATIC mp_obj_t fill_rect(size_t n_args, const mp_obj_t *args)
{
// write the same pixel value to a region
@ -146,9 +234,7 @@ STATIC mp_obj_t fill_rect(size_t n_args, const mp_obj_t *args)
}
set_window(spi, x, y, w, h);
for(int y=0; y<h; y++) {
write_data(spi, w*2, (const uint8_t *)line);
}
write_data_repeated(spi, h, sizeof(line), (const uint8_t *)line);
return mp_const_none;
}
@ -158,6 +244,7 @@ STATIC const mp_rom_map_elem_t lcd_module_globals_table[] = {
{ MP_ROM_QSTR(MP_QSTR___name__), MP_ROM_QSTR(MP_QSTR_lcd) },
{ MP_ROM_QSTR(MP_QSTR_send_packed), MP_ROM_PTR(&send_packed_obj) },
{ MP_ROM_QSTR(MP_QSTR_fill_rect), MP_ROM_PTR(&fill_rect_obj) },
{ MP_ROM_QSTR(MP_QSTR_send_qr), MP_ROM_PTR(&send_qr_obj) },
};
STATIC MP_DEFINE_CONST_DICT(lcd_module_globals, lcd_module_globals_table);