diff options
Diffstat (limited to 'src/lpc176x')
| -rw-r--r-- | src/lpc176x/gpio.h | 6 | ||||
| -rw-r--r-- | src/lpc176x/i2c.c | 9 |
2 files changed, 10 insertions, 5 deletions
diff --git a/src/lpc176x/gpio.h b/src/lpc176x/gpio.h index e03afbb4..c1507c64 100644 --- a/src/lpc176x/gpio.h +++ b/src/lpc176x/gpio.h @@ -51,8 +51,8 @@ struct i2c_config { }; struct i2c_config i2c_setup(uint32_t bus, uint32_t rate, uint8_t addr); -void i2c_write(struct i2c_config config, uint8_t write_len, uint8_t *write); -void i2c_read(struct i2c_config config, uint8_t reg_len, uint8_t *reg - , uint8_t read_len, uint8_t *read); +int i2c_write(struct i2c_config config, uint8_t write_len, uint8_t *write); +int i2c_read(struct i2c_config config, uint8_t reg_len, uint8_t *reg + , uint8_t read_len, uint8_t *read); #endif // gpio.h diff --git a/src/lpc176x/i2c.c b/src/lpc176x/i2c.c index 7ed631af..519dd504 100644 --- a/src/lpc176x/i2c.c +++ b/src/lpc176x/i2c.c @@ -9,6 +9,7 @@ #include "gpio.h" // i2c_setup #include "internal.h" // gpio_peripheral #include "sched.h" // sched_shutdown +#include "i2ccmds.h" // I2C_BUS_SUCCESS struct i2c_info { LPC_I2C_TypeDef *i2c; @@ -122,7 +123,7 @@ i2c_stop(LPC_I2C_TypeDef *i2c, uint32_t timeout) i2c_wait(i2c, IF_STOP, timeout); } -void +int i2c_write(struct i2c_config config, uint8_t write_len, uint8_t *write) { LPC_I2C_TypeDef *i2c = config.i2c; @@ -133,9 +134,11 @@ i2c_write(struct i2c_config config, uint8_t write_len, uint8_t *write) while (write_len--) i2c_send_byte(i2c, *write++, timeout); i2c_stop(i2c, timeout); + + return I2C_BUS_SUCCESS; } -void +int i2c_read(struct i2c_config config, uint8_t reg_len, uint8_t *reg , uint8_t read_len, uint8_t *read) { @@ -159,4 +162,6 @@ i2c_read(struct i2c_config config, uint8_t reg_len, uint8_t *reg read++; } i2c_stop(i2c, timeout); + + return I2C_BUS_SUCCESS; } |