diff options
Diffstat (limited to 'app/i2c_hw.c')
| -rw-r--r-- | app/i2c_hw.c | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/app/i2c_hw.c b/app/i2c_hw.c index 7fc901e..1dd352c 100644 --- a/app/i2c_hw.c +++ b/app/i2c_hw.c @@ -64,7 +64,7 @@ int i2cp_send (uint8_t v) { uint32_t reg; - uint32_t timeout=1000; + uint32_t timeout = 1000; i2c_send_data (I2C, v); @@ -77,7 +77,8 @@ i2cp_send (uint8_t v) reg & ~(I2C_SR1_BERR | I2C_SR1_ARLO | I2C_SR1_AF | I2C_SR1_PECERR | I2C_SR1_TIMEOUT | I2C_SR1_SMBALERT); - if (!timeout) return 1; + if (!timeout) + return 1; return (reg & I2C_SR1_BTF) ? 0 : -1; @@ -89,13 +90,14 @@ i2cp_start_transaction (uint8_t a, int wnr) { uint32_t reg; uint32_t __attribute__((unused)) dummy; - uint32_t timeout=1000; + uint32_t timeout = 1000; i2c_send_start (I2C); while (!((I2C_SR1 (I2C) & I2C_SR1_SB) & (I2C_SR2 (I2C) & (I2C_SR2_MSL | I2C_SR2_BUSY))) && (timeout--)); - if (!timeout) return -1; + if (!timeout) + return -1; i2c_send_7bit_address (I2C, a, wnr); @@ -104,7 +106,8 @@ i2cp_start_transaction (uint8_t a, int wnr) I2C_SR1 (I2C)) & (I2C_SR1_ADDR | I2C_SR1_BERR | I2C_SR1_ARLO | I2C_SR1_AF | I2C_SR1_PECERR | I2C_SR1_TIMEOUT | I2C_SR1_SMBALERT)) && (timeout--)); - if (!timeout) return -1; + if (!timeout) + return -1; dummy = I2C_SR2 (I2C); @@ -123,31 +126,31 @@ i2cp_reset_sm (void) { int i; - MAP_OUTPUT_PP(SCL); - MAP_OUTPUT_PP(SDA); + MAP_OUTPUT_PP (SCL); + MAP_OUTPUT_PP (SDA); - SET(SDA); - SET(SCL); + SET (SDA); + SET (SCL); delay_us (10); - CLEAR(SDA); + CLEAR (SDA); delay_us (10); - CLEAR(SCL); + CLEAR (SCL); for (i = 0; i < 9; ++i) { delay_us (10); - SET(SCL); + SET (SCL); delay_us (10); - CLEAR(SCL); + CLEAR (SCL); delay_us (10); } - SET(SCL); + SET (SCL); delay_us (10); - SET(SDA); + SET (SDA); delay_us (10); - MAP_AF_OD(SCL); - MAP_AF_OD(SDA); + MAP_AF_OD (SCL); + MAP_AF_OD (SDA); } |