From 6f5d1cd31c06d6d27a265ccd725e61868a2a8e5b Mon Sep 17 00:00:00 2001
From: Terje Io <terjeio@users.noreply.github.com>
Date: Tue, 10 Aug 2021 13:28:54 +0200
Subject: [PATCH] Added entries for motor driver chip select lines to
 crossbar.h, enums for aux I/O pin types. No funtional changes.

---
 crossbar.h | 15 +++++++++++++++
 grbl.h     |  2 +-
 hal.h      | 15 ++++++++++++++-
 3 files changed, 30 insertions(+), 2 deletions(-)

diff --git a/crossbar.h b/crossbar.h
index d701ea1..d995cc6 100644
--- a/crossbar.h
+++ b/crossbar.h
@@ -91,6 +91,13 @@ typedef enum {
     Output_DirC,
     Output_DirU,
     Output_DirV,
+    Output_MotorChipSelect,
+    Output_MotorChipSelectX,
+    Output_MotorChipSelectY,
+    Output_MotorChipSelectZ,
+    Output_MotorChipSelectM3,
+    Output_MotorChipSelectM4,
+    Output_MotorChipSelectM5,
     Output_StepperPower,
     Output_StepperEnable,
     Output_StepperEnableX,
@@ -207,6 +214,13 @@ PROGMEM static const pin_name_t pin_names[] = {
    { .function = Output_StepperEnableC,  .name = "C enable" },
    { .function = Output_StepperEnableXY, .name = "XY enable" },
    { .function = Output_StepperEnableAB, .name = "AB enable" },
+   { .function = Output_MotorChipSelect, .name = "Motor CS" },
+   { .function = Output_MotorChipSelectX, .name = "Motor CSX" },
+   { .function = Output_MotorChipSelectY, .name = "Motor CSY" },
+   { .function = Output_MotorChipSelectZ, .name = "Motor CSZ" },
+   { .function = Output_MotorChipSelectM3, .name = "Motor CSM3" },
+   { .function = Output_MotorChipSelectM4, .name = "Motor CSM4" },
+   { .function = Output_MotorChipSelectM5, .name = "Motor CSM5" },
    { .function = Output_SpindleOn,       .name = "Spindle on" },
    { .function = Output_SpindleDir,      .name = "Spindle direction" },
    { .function = Output_SpindlePWM,      .name = "Spindle PWM" },
@@ -239,6 +253,7 @@ typedef enum {
     PinGroup_StepperDir,
     PinGroup_AuxOutput,
     PinGroup_SdCard,
+    PinGroup_MotorChipSelect,
     PinGroup_I2C,
     PinGroup_SPI,
     PinGroup_UART,
diff --git a/grbl.h b/grbl.h
index 02bfd91..cd08323 100644
--- a/grbl.h
+++ b/grbl.h
@@ -34,7 +34,7 @@
 #else
 #define GRBL_VERSION "1.1f"
 #endif
-#define GRBL_VERSION_BUILD "20210803"
+#define GRBL_VERSION_BUILD "20210809"
 
 // The following symbols are set here if not already set by the compiler or in config.h
 // Do NOT change here!
diff --git a/hal.h b/hal.h
index 76e57dd..abc623d 100644
--- a/hal.h
+++ b/hal.h
@@ -72,6 +72,9 @@ typedef union {
 } driver_cap_t;
 
 
+/*! \brief Pointer to function called to set up driver peripherals after settings are loaded. */
+typedef bool (*driver_setup_ptr)(settings_t *settings);
+
 /*! \brief Pointer to function to be called when a soft reset occurs. */
 typedef void (*driver_reset_ptr)(void);
 
@@ -88,6 +91,16 @@ typedef bool (*stream_select_ptr)(const io_stream_t *stream);
  *  Aux I/O  *
  *************/
 
+typedef enum {
+    Port_Analog = 0,
+    Port_Digital = 1
+} io_port_type_t;
+
+typedef enum {
+    Port_Input = 0,
+    Port_Output = 1
+} io_port_direction_t;
+
 /*! \brief Pointer to function for setting a digital output.
 \param port port number
 \param on true to set ouput high, false to set it low
@@ -622,7 +635,7 @@ typedef struct {
     \param settings pointer to settings_t structure.
     \returns true if completed sucessfully and the driver supports the _settings->version_ number, false otherwise.
     */
-    bool (*driver_setup)(settings_t *settings);
+    driver_setup_ptr driver_setup;
 
     /*! \brief Millisecond delay.