Revert "Added I2C slave echo example in examples folder. Using another maple, write a byte and then read."

This reverts commit 5947249.

Reverting pull request #54, which breaks examples/i2c-mcp4725-dac.cpp.

Signed-off-by: Marti Bolivar <[email protected]>

Author: Marti Bolivar

CREDITS

@@ -18,11 +18,6 @@ E: [email protected]
 D: Current libmaple maintainer
 D: Random libmaple hacks
 
-N: Barry Carter ("ginge")
-E: [email protected]
-D: Added I2C slave support
-W: headfuzz.co.uk
-
 N: Anton Eltchaninov
 E: [email protected]
 D: STM32F1 value line support
@@ -86,4 +81,9 @@ W: http://sarup.dk/index.html
 N: Andy Scott ("xttocs")
 E: [email protected]
 D: LiquidCrystal library
- 
+
+N: Barry Carter ("ginge")
+E: [email protected]
+D: Added i2C slave support
+W: headfuzz.co.uk
+ 

examples/i2c_slave_example.cpp

@@ -458,10 +458,6 @@ void _i2c_irq_handler(i2c_dev *dev) {
         if (sr1 & I2C_SR1_RXNE) {
             if (dev->config_flags & I2C_SLAVE_USE_RX_BUFFER) {
                 /* Fill the buffer with the contents of the data register */
-                /* These is potential for buffer overflow here, so we should
-                 * really store the size of the array. This is expensive in
-                 * the ISR so left out for now. We must trust the implementor!
-                 */
                 dev->i2c_slave_msg->data[dev->i2c_slave_msg->xferred++] = dev->regs->DR;
                 dev->i2c_slave_msg->length++;
             }

libmaple/i2c.c

@@ -210,7 +210,6 @@ typedef struct i2c_msg {
 #define I2C_SLAVE_DUAL_ADDRESS  0x40          // Enable the dual slave address scheme
 #define I2C_SLAVE_GENERAL_CALL  0x80          // Enable the general call on address 0x00
 void i2c_master_enable(i2c_dev *dev, uint32 flags);
-void i2c_slave_enable(i2c_dev *dev, uint32 flags);
 
 #define I2C_ERROR_PROTOCOL      (-1)
 #define I2C_ERROR_TIMEOUT       (-2)