From ed35d40a612633c3545a6cd7e59e3e432c623dfc Mon Sep 17 00:00:00 2001
From: Florian Jung <flo@windfisch.org>
Date: Sun, 24 Jan 2016 23:10:24 +0100
Subject: actually commit the write

---
 avr/1wire.c | 10 ++++++++++
 avr/1wire.h |  2 ++
 avr/main.c  | 13 +++++++++++++
 3 files changed, 25 insertions(+)

(limited to 'avr')

diff --git a/avr/1wire.c b/avr/1wire.c
index 54c8dcc..72722df 100644
--- a/avr/1wire.c
+++ b/avr/1wire.c
@@ -238,6 +238,16 @@ uint8_t ds1992_scratch_verify(uint16_t addr, const uint8_t* buf, uint8_t len, ui
 	return status;
 }
 
+void ds1992_scratch_copy(uint16_t addr, uint8_t es_reg)
+{
+	w1_byte_wr(SKIP_ROM);
+	w1_byte_wr(0x55); // copy scratchpad to memory
+	w1_byte_wr((addr & 0x00FF));
+	w1_byte_wr((addr & 0xFF00) >> 8);
+	w1_byte_wr(es_reg);
+
+	while(w1_byte_rd() != 0);
+}
 
 void w1_command( uint8_t command, uint8_t *id )
 {
diff --git a/avr/1wire.h b/avr/1wire.h
index af48d0b..36160b7 100644
--- a/avr/1wire.h
+++ b/avr/1wire.h
@@ -28,4 +28,6 @@ void w1_command( uint8_t command, uint8_t *id );
 void ds1992_read(uint16_t addr, uint8_t* buf, uint8_t len);
 void ds1992_scratch_write(uint16_t addr, const uint8_t* buf, uint8_t len);
 uint8_t ds1992_scratch_verify(uint16_t addr, const uint8_t* buf, uint8_t len, uint8_t* es_reg_ptr);
+void ds1992_scratch_copy(uint16_t addr, uint8_t es_reg);
+
 #endif
diff --git a/avr/main.c b/avr/main.c
index 15d98d3..f79853e 100644
--- a/avr/main.c
+++ b/avr/main.c
@@ -212,6 +212,19 @@ int main(void)
 						goto write_failed;
 					}
 
+					result = w1_reset();
+					if (result != 0)
+					{
+						replyBuffer[0] = 0x03;
+						error = 1;
+						goto write_failed;
+					}
+					
+					// commit the write
+					ds1992_scratch_copy(writepos, es_reg);
+
+
+
 					replyBuffer[0] = 0xFF; // success
 					error = 0;
 
-- 
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