diff options
| author | Karl Palsson <karlp@tweak.net.au> | 2017-10-27 00:54:30 +0300 |
|---|---|---|
| committer | Karl Palsson <karlp@etactica.com> | 2018-01-08 14:16:24 +0300 |
| commit | ed90df85f089d260fc598cb200b5d36678045ec0 (patch) | |
| tree | d82f4723485615cd8f0a5f8c15b6bf64f0c9c638 /include/libopencm3/stm32/common/i2c_common_v2.h | |
| parent | 965d28ecbec5df5b77f7a93222e0eb8d79c4c79c (diff) | |
stm32:i2c-v2: Clarify digital filter setting
Drop redundant field definitions, fix truncation of argument bug and add
documentation.
Fixes: https://github.com/libopencm3/libopencm3/issues/831
Diffstat (limited to 'include/libopencm3/stm32/common/i2c_common_v2.h')
| -rw-r--r-- | include/libopencm3/stm32/common/i2c_common_v2.h | 21 |
1 files changed, 3 insertions, 18 deletions
diff --git a/include/libopencm3/stm32/common/i2c_common_v2.h b/include/libopencm3/stm32/common/i2c_common_v2.h index 1a9df080..5a6e1950 100644 --- a/include/libopencm3/stm32/common/i2c_common_v2.h +++ b/include/libopencm3/stm32/common/i2c_common_v2.h @@ -137,24 +137,9 @@ specific memorymap.h header before including this header file.*/ /* ANFOFF: Analog noise filter OFF */ #define I2C_CR1_ANFOFF (1 << 12) -/* DNF[3:0]: Digital noise filter */ -#define I2C_CR1_DNF_DISABLED (0x0 << 8) -#define I2C_CR1_DNF_UP_1_TI2CCLK (0x1 << 8) -#define I2C_CR1_DNF_UP_2_TI2CCLK (0x2 << 8) -#define I2C_CR1_DNF_UP_3_TI2CCLK (0x3 << 8) -#define I2C_CR1_DNF_UP_4_TI2CCLK (0x4 << 8) -#define I2C_CR1_DNF_UP_5_TI2CCLK (0x5 << 8) -#define I2C_CR1_DNF_UP_6_TI2CCLK (0x6 << 8) -#define I2C_CR1_DNF_UP_7_TI2CCLK (0x7 << 8) -#define I2C_CR1_DNF_UP_8_TI2CCLK (0x8 << 8) -#define I2C_CR1_DNF_UP_9_TI2CCLK (0x9 << 8) -#define I2C_CR1_DNF_UP_10_TI2CCLK (0xA << 8) -#define I2C_CR1_DNF_UP_11_TI2CCLK (0xB << 8) -#define I2C_CR1_DNF_UP_12_TI2CCLK (0xC << 8) -#define I2C_CR1_DNF_UP_13_TI2CCLK (0xD << 8) -#define I2C_CR1_DNF_UP_14_TI2CCLK (0xE << 8) -#define I2C_CR1_DNF_UP_15_TI2CCLK (0xF << 8) -#define I2C_CR1_DNF_MASK (0xF << 8) +/** DNF[3:0]: Digital noise filter. */ +#define I2C_CR1_DNF_MASK 0xF +#define I2C_CR1_DNF_SHIFT 8 /* ERRIE: Error interrupts enable */ #define I2C_CR1_ERRIE (1 << 7) |