diff options
| author | Karl Palsson <karlp@tweak.net.au> | 2017-03-24 03:10:44 +0300 |
|---|---|---|
| committer | Karl Palsson <karlp@tweak.net.au> | 2017-03-31 00:48:08 +0300 |
| commit | b40c72828df0aab74224df6fd18205ef9623a084 (patch) | |
| tree | 8ab57b559efa4629586b5557b4b0960bda7182e9 /include/libopencm3/stm32/common/i2c_common_v2.h | |
| parent | fb3b5e08f3c21c2f5f80d274b916e7dd5e548e67 (diff) | |
stm32: i2c: provide "transfer" level helper routines
For both v1 and v2, provide routines to help do arbitrary length
write/read transfers.
Tested with multiple byte writes and reads, for both 100khz and 400khz,
with repeated starts and stop/starts. However, only tested (presently)
with a single i2c target device, a Sensiron SHT21 sensor. Extended
testing against eeproms and alternative devices would be useful
Diffstat (limited to 'include/libopencm3/stm32/common/i2c_common_v2.h')
| -rw-r--r-- | include/libopencm3/stm32/common/i2c_common_v2.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/libopencm3/stm32/common/i2c_common_v2.h b/include/libopencm3/stm32/common/i2c_common_v2.h index 01ec643b..3012fd7f 100644 --- a/include/libopencm3/stm32/common/i2c_common_v2.h +++ b/include/libopencm3/stm32/common/i2c_common_v2.h @@ -31,6 +31,9 @@ specific memorymap.h header before including this header file.*/ #ifndef LIBOPENCM3_I2C_COMMON_V2_H #define LIBOPENCM3_I2C_COMMON_V2_H +#include <stddef.h> +#include <stdint.h> + /* --- Convenience macros -------------------------------------------------- */ /* I2C register base addresses (for convenience) */ @@ -427,6 +430,7 @@ void i2c_enable_rxdma(uint32_t i2c); void i2c_disable_rxdma(uint32_t i2c); void i2c_enable_txdma(uint32_t i2c); void i2c_disable_txdma(uint32_t i2c); +void i2c_transfer7(uint32_t i2c, uint8_t addr, uint8_t *w, size_t wn, uint8_t *r, size_t rn); END_DECLS |