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Take display offsets for PewPew M4 from the bootloader config 

The PewPew M4 devices come with different displays, which require
different offsets. Since the information about offsets is saved in
the bootloader, we can take it from there.
This commit is contained in:
Radomir Dopieralski 2020-01-06 14:06:42 +01:00
parent 776c9b011c
commit 59ded1131f
1 changed files with 33 additions and 4 deletions
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37
ports/atmel-samd/boards/pewpew_m4/board.c
View File

@ -35,8 +35,36 @@
displayio_fourwire_obj_t board_display_obj;
typedef struct {
const uint32_t *config_data;
void *handoverHID;
void *handoverMSC;
const char *info_uf2;
} UF2_BInfo;
#define APP_START_ADDRESS 0x00004000
#define UF2_BINFO ((UF2_BInfo *)(APP_START_ADDRESS - sizeof(UF2_BInfo)))
#define CFG_DISPLAY_CFG0 39
#define CFG_MAGIC0 0x1e9e10f1
#define DELAY 0x80
uint32_t lookupCfg(uint32_t key, uint32_t defl) {
const uint32_t *ptr = UF2_BINFO->config_data;
if (!ptr || (((uint32_t)ptr) & 3) || *ptr != CFG_MAGIC0) {
// no config data!
} else {
ptr += 4;
while (*ptr) {
if (*ptr == key)
return ptr[1];
ptr += 2;
}
}
return defl;
}
uint8_t display_init_sequence[] = {
0x01, 0 | DELAY, 150, // SWRESET
0x11, 0 | DELAY, 255, // SLPOUT
@ -63,8 +91,6 @@ uint8_t display_init_sequence[] = {
0x2E, 0x2C, 0x29, 0x2D,
0x2E, 0x2E, 0x37, 0x3F,
0x00, 0x00, 0x02, 0x10,
0x2a, 3, 0x02, 0x00, 0x81, // _CASET XSTART = 2, XEND = 129
0x2b, 3, 0x02, 0x00, 0x81, // _RASET XSTART = 2, XEND = 129
0x13, 0 | DELAY, 10, // _NORON
0x29, 0 | DELAY, 100, // _DISPON
};
@ -83,14 +109,17 @@ void board_init(void) {
&pin_PA17, // TFT_RST Reset
60000000);
uint32_t cfg0 = lookupCfg(CFG_DISPLAY_CFG0, 0x000000);
uint32_t offX = (cfg0 >> 8) & 0xff;
uint32_t offY = (cfg0 >> 16) & 0xff;
displayio_display_obj_t* display = &displays[0].display;
display->base.type = &displayio_display_type;
common_hal_displayio_display_construct(display,
bus,
160, // Width (after rotation)
128, // Height (after rotation)
0, // column start
0, // row start
offX, // column start
offY, // row start
0, // rotation
16, // Color depth
false, // grayscale