From af7942186c7d0567466c25209dcfccb9642d8ed2 Mon Sep 17 00:00:00 2001
From: Nao Pross <naopross@thearcway.org>
Date: Sun, 6 May 2018 22:23:22 +0200
Subject: Fix uart device static_assert, add backspace support

other changes:
replace strip() with STL functions
---
 hal/uart.tpp | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

(limited to 'hal')

diff --git a/hal/uart.tpp b/hal/uart.tpp
index 359722e..21d7479 100644
--- a/hal/uart.tpp
+++ b/hal/uart.tpp
@@ -29,28 +29,28 @@ namespace uart
     template<unsigned dev>
     inline std::queue<uint8_t>& rx_buffer()
     {
-        static_assert(dev <= devices_count, "invalid device number");
+        static_assert(dev != 0 && dev <= devices_count, "invalid device number");
         return uart::_rx_buffer[dev -1];
     }
 
     template<unsigned dev>
     inline std::queue<uint8_t>& tx_buffer()
     {
-        static_assert(dev <= devices_count, "invalid device number");
+        static_assert(dev != 0 && dev <= devices_count, "invalid device number");
         return uart::_tx_buffer[dev -1];
     }
 
     template<unsigned dev>
     inline bool echo(bool enabled)
     {
-        static_assert(dev <= devices_count, "invalid device number");
+        static_assert(dev != 0 && dev <= devices_count, "invalid device number");
         _echo[dev -1] = enabled;
     }
 
     template<unsigned dev>
     inline bool echo_enabled()
     {
-        static_assert(dev <= devices_count, "invalid device number");
+        static_assert(dev != 0 && dev <= devices_count, "invalid device number");
         return _echo[dev -1];
     }
 
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