From 2de776546163efd6d18fa089b6b0e46bf05216bc Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sergi=20Hern=C3=A0ndez=20Juan?= <shernand@iri.upc.edu>
Date: Thu, 26 Sep 2013 08:42:28 +0000
Subject: [PATCH] Enabled the internal pull-ups for the I2C pins. Removed any
write to the I2C pins to avoid communication errors.
---
gpio.c | 2 +-
i2c.c | 4 ++--
tibi_dabo_battery.c | 1 +
3 files changed, 4 insertions(+), 3 deletions(-)
diff --git a/gpio.c b/gpio.c
index 37ab5b7..72e5ba7 100755
--- a/gpio.c
+++ b/gpio.c
@@ -14,7 +14,7 @@ void InitGPIO(void)
// Pc3 as an input (OVP)
- PORTC=0x00;
+ PORTC=PORTC&0xF0;
}
void enable_battery(void)
diff --git a/i2c.c b/i2c.c
index b9f4236..33e42b1 100755
--- a/i2c.c
+++ b/i2c.c
@@ -51,8 +51,8 @@ void i2cInit(void)
{
// set pull-up resistors on I2C bus pins
// TODO: should #ifdef these
-// sbi(PORTC, 5); // i2c SCL on ATmega163,323,16,32,etc
-// sbi(PORTC, 4); // i2c SDA on ATmega163,323,16,32,etc
+ sbi(PORTC, 5); // i2c SCL on ATmega163,323,16,32,etc
+ sbi(PORTC, 4); // i2c SDA on ATmega163,323,16,32,etc
// sbi(PORTD, 0); // i2c SCL on ATmega128,64
// sbi(PORTD, 1); // i2c SDA on ATmega128,64
diff --git a/tibi_dabo_battery.c b/tibi_dabo_battery.c
index d2e7530..e35378b 100755
--- a/tibi_dabo_battery.c
+++ b/tibi_dabo_battery.c
@@ -41,6 +41,7 @@ int main (void)
// initialize the GPIO
InitGPIO();
+
// initialize uart
uartInit();
// set desired baud rate in bps
--
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