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Merge pull request #2452 from pewpew-game/pewpew-m4-bootloader-offsets

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Take display offsets for PewPew M4 from the bootloader config
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Scott Shawcroft 2020-01-06 21:05:31 -08:00 committed by GitHub
commit 5b127bd78c
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 33 additions and 4 deletions
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37
ports/atmel-samd/boards/pewpew_m4/board.c
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@ -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