From f8e6c5b3790d126ab871638c1abeee6ccb4473b6 Mon Sep 17 00:00:00 2001
From: Lucas De Marchi <lucas.demarchi@intel.com>
Date: Mon, 30 Nov 2015 22:38:00 -0200
Subject: [PATCH] AP_HAL: add helper method to read registers

This just forwards to the transfer() method, avoiding the need in driver
code to have a similar method.
---
 libraries/AP_HAL/Device.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libraries/AP_HAL/Device.h b/libraries/AP_HAL/Device.h
index 1ab6ea867c..0186e1ef4e 100644
--- a/libraries/AP_HAL/Device.h
+++ b/libraries/AP_HAL/Device.h
@@ -53,6 +53,11 @@ public:
     virtual bool transfer(const uint8_t *send, uint32_t send_len,
                           uint8_t *recv, uint32_t recv_len) = 0;
 
+    bool read_registers(uint8_t first_reg, uint8_t *recv, uint32_t recv_len)
+    {
+        return transfer(&first_reg, 1, recv, recv_len);
+    }
+
     bool write_register(uint8_t reg, uint8_t val)
     {
         uint8_t buf[2] = { reg, val };