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Pete edited this page Jan 13, 2022 · 1 revision

I2S Output Port Mapping

Port Description
I2S_0 X_EN_PIN
I2S_1 X_DIRECTION_PIN
I2S_2 X_STEP_PIN
I2S_3 X_CS - NOT USED
I2S_4 Y_EN_PIN
I2S_5 Y_DIRECTION_PIN
I2S_6 Y_STEP_PIN
I2S_7 Y_CS - NOT USED
I2S_8 Z_EN_PIN
I2S_9 Z_DIRECTION_PIN
I2S_10 Z_STEP_PIN
I2S_11 Z_CS - NOT USED
I2S_12 FET_1
I2S_13 RELAY_1
I2S_14 RELAY_2
I2S_15 RELAY_3
I2S_16 SPINDLE_DIR
I2S_17 SPINDLE_EN
I2S_18 SPARE_1
I2S_19 SPARE_2
I2S_20 A_EN_PIN
I2S_21 A_DIRECTION_PIN
I2S_22 A_STEP_PIN
I2S_23 A_CS - NOT USED
I2S_24 B_EN_PIN
I2S_25 B_DIRECTION_PIN
I2S_26 B_STEP_PIN
I2S_27 B_CS - NOT USED
I2S_28 C_EN_PIN
I2S_29 C_DIRECTION_PIN
I2S_30 C_STEP_PIN
I2S_31 C_CS - NOT USED

ESP32 Mapping

Port Description
GPIO12 SHIFT_DATA
GPIO13 FET_2
GPIO14 C-PIN
GPIO15 Y-PIN
GPIO16 RS_485_RX
GPIO17 RS_485_TX
GPIO18 SD_CLK
GPIO19 SD_MISO
GPIO2 Z-PIN
GPIO21 SHIFT_STR_CLK
GPIO22 SHIFT_CLK
GPIO23 SD_MOSI
GPIO25 DAC_OUT/PWM
GPIO26 X-PIN
GPIO27 PROBE-PIN
GPIO32 B-PIN
GPIO33 FET_3
GPIO34 GRBL_MACRO
GPIO35 A-PIN
GPIO4 RS_485_DE_RE
GPIO5 SD_CS
GPIO39 GRBL_START
GPIO36 GRBL_HOLD

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