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I2C code formatting, README fix (#462)

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Ruslan V. Uss 2017-10-12 17:42:34 +05:00 • committed by GitHub
parent b520735d20
commit 87a3503f93
3 changed files with 94 additions and 87 deletions
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13
extras/i2c/README.md
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@ -2,11 +2,12 @@
This time a driver for the excellent esp-open-rtos. This is a bit banging I2C driver based on the Wikipedia pesudo C code [1].
### Usage
### Basic usage
````
```C
#include <i2c.h>
#define BUS (0)
#define SCL_PIN (0)
#define SDA_PIN (2)
@ -14,19 +15,19 @@ uint8_t slave_addr = 0x20;
uint8_t reg_addr = 0x1f;
uint8_t reg_data;
i2c_init(SCL_PIN, SDA_PIN);
i2c_init(BUS, SCL_PIN, SDA_PIN, I2C_FREQ_400K);
// Write 1 byte to slave register
int err = i2c_slave_write(slave_addr, &reg_addr, &data, 1);
int err = i2c_slave_write(BUS, slave_addr, &reg_addr, &data, 1);
if (err != 0)
{
// do something with error
}
// Issue write to slave, sending reg_addr, followed by reading 1 byte
err = i2c_slave_read(slave_addr, &reg_addr, &reg_data, 1);
err = i2c_slave_read(BUS, slave_addr, &reg_addr, &reg_data, 1);
````
```
For details please see `extras/i2c/i2c.h`.