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Add disable function to I2C driver

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This commit is contained in:
Antonio Lignan 2012-05-09 10:54:21 +02:00
parent 5a431482bf
commit 3dde89971c
2 changed files with 9 additions and 0 deletions
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8
platform/z1/dev/i2cmaster.c
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@ -183,6 +183,14 @@ i2c_enable(void) {
I2C_PxOUT |= (I2C_SDA | I2C_SCL); // Select pull-up resistors I2C_PxOUT |= (I2C_SDA | I2C_SCL); // Select pull-up resistors
} }
void
i2c_disable(void) {
I2C_PxSEL &= ~(I2C_SDA | I2C_SCL); // GPIO function selected
I2C_PxSEL2 &= ~(I2C_SDA | I2C_SCL); // GPIO function selected
I2C_PxREN &= ~(I2C_SDA | I2C_SCL); // Deactivate internal pull-up/-down resistors
I2C_PxOUT &= ~(I2C_SDA | I2C_SCL); // Select pull-up resistors
}
/*----------------------------------------------------------------------------*/ /*----------------------------------------------------------------------------*/
//------------------------------------------------------------------------------ //------------------------------------------------------------------------------
// void i2c_transmit_n(unsigned char byte_ctr, unsigned char *field) // void i2c_transmit_n(unsigned char byte_ctr, unsigned char *field)

1
platform/z1/dev/i2cmaster.h
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@ -44,6 +44,7 @@
#include "contiki.h" #include "contiki.h"
void i2c_enable(void); void i2c_enable(void);
void i2c_disable(void);
void i2c_receiveinit(uint8_t slave_address); void i2c_receiveinit(uint8_t slave_address);
uint8_t i2c_receive_n(uint8_t byte_ctr, uint8_t *rx_buf); uint8_t i2c_receive_n(uint8_t byte_ctr, uint8_t *rx_buf);