From 31e97ecc65b813a14f77e4febbbdf9953372cddf Mon Sep 17 00:00:00 2001
From: LRFLEW <LRFLEW@aol.com>
Date: Wed, 3 Nov 2021 16:11:16 -0500
Subject: [PATCH] Add Error Types for VPAD and KPAD Reads

---
 include/padscore/kpad.h | 16 +++++++++++++---
 include/vpad/input.h    |  4 ++++
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/include/padscore/kpad.h b/include/padscore/kpad.h
index 6797a395..832b86fa 100644
--- a/include/padscore/kpad.h
+++ b/include/padscore/kpad.h
@@ -28,8 +28,18 @@ typedef struct KPADVec3D KPADVec3D;
 //! Error.
 typedef enum KPADError
 {
-   //! No errors.
-   KPAD_ERROR_OK              = 0,
+   //! No error occurred, and data was written to the buffers.
+   KPAD_ERROR_OK                 = 0,
+   //! There was no sample new data available to write.
+   KPAD_ERROR_NO_SAMPLES         = -1,
+   //! The requested controller or channel was invalid.
+   KPAD_ERROR_INVALID_CONTROLLER = -2,
+   //! WPAD is uninitialized, shouldn't happen unless WPADShutdown() is manually called
+   KPAD_ERROR_WPAD_UNINIT        = -3,
+   //! KPAD channel is busy, perhaps being accessed by another thread
+   KPAD_ERROR_BUSY               = -4,
+   //! KPAD is uninitialized, need to call KPADInit()
+   KPAD_ERROR_UNINITIALIZED      = -5,
 } KPADError;
 
 //! 2D vector.
@@ -259,7 +269,7 @@ int32_t
 KPADReadEx(KPADChan chan,
            KPADStatus *data,
            uint32_t size,
-           int32_t *error);
+           KPADError *error);
 
 #ifdef __cplusplus
 }
diff --git a/include/vpad/input.h b/include/vpad/input.h
index 9d1a8944..41c72e89 100644
--- a/include/vpad/input.h
+++ b/include/vpad/input.h
@@ -119,6 +119,10 @@ typedef enum VPADReadError
    VPAD_READ_NO_SAMPLES          = -1,
    //! The requested controller or channel was invalid.
    VPAD_READ_INVALID_CONTROLLER  = -2,
+   //! VPAD channel is busy, perhaps being accessed by another thread
+   VPAD_READ_BUSY                = -4,
+   //! VPAD is uninitialized, need to call VPADInit()
+   VPAD_READ_UNINITIALIZED       = -5,
 } VPADReadError;
 
 //! LCD mode.