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authorErez Zukerman <[email protected]>2018-07-03 14:06:36 -0400
committerGitHub <[email protected]>2018-07-03 14:06:36 -0400
commit9c2dde98e2b963704eb7cb87f6c53c52599fba53 (patch)
treeced26f98b401d83aee69a6ee3b17bf9fbc6ad556 /drivers/avr/i2c_master.h
parenta7df902734b6aa8975e3a62a07ddb5544fd4ae85 (diff)
parent08283f61244479743c4ff5ecba39bd0264979d77 (diff)
downloadqmk_firmware-9c2dde98e2b963704eb7cb87f6c53c52599fba53.tar.gz
qmk_firmware-9c2dde98e2b963704eb7cb87f6c53c52599fba53.zip
Merge pull request #3229 from qmk/hf/shinydox0.6.57
Adds I2C timeout and return values, adds support for future RGB Ergodox EZ
Diffstat (limited to 'drivers/avr/i2c_master.h')
-rwxr-xr-xdrivers/avr/i2c_master.h27
1 files changed, 18 insertions, 9 deletions
diff --git a/drivers/avr/i2c_master.h b/drivers/avr/i2c_master.h
index 2479d28d52..cf93680be4 100755
--- a/drivers/avr/i2c_master.h
+++ b/drivers/avr/i2c_master.h
@@ -8,15 +8,24 @@
#define I2C_READ 0x01
#define I2C_WRITE 0x00
+typedef int16_t i2c_status_t;
+
+#define I2C_STATUS_SUCCESS (0)
+#define I2C_STATUS_ERROR (-1)
+#define I2C_STATUS_TIMEOUT (-2)
+
+#define I2C_TIMEOUT_IMMEDIATE (0)
+#define I2C_TIMEOUT_INFINITE (0xFFFF)
+
void i2c_init(void);
-uint8_t i2c_start(uint8_t address);
-uint8_t i2c_write(uint8_t data);
-uint8_t i2c_read_ack(void);
-uint8_t i2c_read_nack(void);
-uint8_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length);
-uint8_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length);
-uint8_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length);
-uint8_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length);
-void i2c_stop(void);
+i2c_status_t i2c_start(uint8_t address, uint16_t timeout);
+i2c_status_t i2c_write(uint8_t data, uint16_t timeout);
+int16_t i2c_read_ack(uint16_t timeout);
+int16_t i2c_read_nack(uint16_t timeout);
+i2c_status_t i2c_transmit(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
+i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
+i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
+i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
+i2c_status_t i2c_stop(uint16_t timeout);
#endif // I2C_MASTER_H