From 2d46c99971d14229649e677cf1305f47a8890946 Mon Sep 17 00:00:00 2001
From: Craig Altrenburg <craig@qrpc.com>
Date: Mon, 6 Dec 2021 17:00:15 -0500
Subject: [PATCH] Added readRaw

---
 Sources/I2C.swift | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/Sources/I2C.swift b/Sources/I2C.swift
index 30de382..bc64d15 100644
--- a/Sources/I2C.swift
+++ b/Sources/I2C.swift
@@ -76,11 +76,15 @@ public protocol I2CInterface {
     func readWord(_ address: Int, command: UInt8) -> UInt16
     func readData(_ address: Int, command: UInt8) -> [UInt8]
     func readI2CData(_ address: Int, command: UInt8) -> [UInt8]
+    func readRaw(_ address: Int, length: UInt) -> [UInt8]
+
     func tryReadByte(_ address: Int) -> UInt8?
     func tryReadByte(_ address: Int, command: UInt8) -> UInt8?
     func tryReadWord(_ address: Int, command: UInt8) -> UInt16?
     func tryReadData(_ address: Int, command: UInt8) -> [UInt8]?
     func tryReadI2CData(_ address: Int, command: UInt8) -> [UInt8]?
+    func tryReadRaw(_ address: Int, length: UInt) -> [UInt8]?
+
     @discardableResult func writeQuick(_ address: Int) -> Bool
     @discardableResult func writeByte(_ address: Int, value: UInt8) -> Bool
     @discardableResult func writeByte(_ address: Int, command: UInt8, value: UInt8) -> Bool
@@ -249,7 +253,33 @@ public final class SysFSI2C: I2CInterface {
 
         return buf
     }
- 
+
+    public func readRaw(_ address: Int, length: UInt) -> [UInt8] {
+        var buf: [UInt8] = [UInt8](repeating:0, count: length)
+
+        setSlaveAddress(address)
+
+        let r =  read( i2cId, &buf, length )
+
+        if r < 0 {
+            perror("I2C read failed")
+            abort()
+        }
+        return buf
+    }
+
+    public func tryReadRaw(_ address: Int, length: UInt) -> [UInt8]? {
+        var buf: [UInt8] = [UInt8](repeating:0, count: length)
+
+        setSlaveAddress(address)
+
+        let r =  read( i2cId, &buf, length )
+
+        if r < 0 { return nil }
+
+        return buf
+    }
+
     public func writeQuick(_ address: Int) -> Bool {
         setSlaveAddress(address)