┌────────┐
R1  ┤  1  40 ├ G1
B1  ┤  2  38 ├ N
R2  ┤  4  36 ├ G2
B2  ┤  6  34 ├ LE
LA  ┤  8  21 ├ LB
LC  ┤ 10  17 ├ LD
CLK ┤ 13  15 ├ LAT
OE  ┤ 14   ⏚ ├ GND
    └────────┘

#define R1_PIN   1
#define G1_PIN  40
#define B1_PIN   2
#define R2_PIN   4
#define G2_PIN  36
#define B2_PIN   6
#define A_PIN    8
#define B_PIN   21
#define C_PIN   10
#define D_PIN   17
#define E_PIN   34 // required for 1/32 scan panels, like 64x64px. Any available pin would do, i.e. IO32
#define LAT_PIN 15
#define OE_PIN  14
#define CLK_PIN 13

HUB75_I2S_CFG::i2s_pins _pins={R1_PIN, G1_PIN, B1_PIN, R2_PIN, G2_PIN, B2_PIN, A_PIN, B_PIN, C_PIN, D_PIN, E_PIN, LAT_PIN, OE_PIN, CLK_PIN};
HUB75_I2S_CFG mxconfig(
    64, // Module width
    64, // Module height
    1, // chain length
    _pins, // pin mapping
);
dma_display = new MatrixPanel_I2S_DMA(mxconfig);