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| author | Karl Palsson <karlp@tweak.net.au> | 2017-02-21 23:11:43 +0000 |
|---|---|---|
| committer | Karl Palsson <karlp@tweak.net.au> | 2017-02-21 23:11:43 +0000 |
| commit | 65301e5a0b382585887ea7b13e4eb9b0cb26c60f (patch) | |
| tree | 7c6cf4cb70575c4dfa144e7894f05352207fc01b /tests/i2c-master/i2c-master.c | |
| parent | 115b771e56aba7e7d066c8a58819d61d51009116 (diff) | |
| download | olsndot-65301e5a0b382585887ea7b13e4eb9b0cb26c60f.tar.gz olsndot-65301e5a0b382585887ea7b13e4eb9b0cb26c60f.tar.bz2 olsndot-65301e5a0b382585887ea7b13e4eb9b0cb26c60f.zip | |
i2c-master: start progressing to extracting common i2c code
Diffstat (limited to 'tests/i2c-master/i2c-master.c')
| -rw-r--r-- | tests/i2c-master/i2c-master.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/tests/i2c-master/i2c-master.c b/tests/i2c-master/i2c-master.c new file mode 100644 index 0000000..64c9cfe --- /dev/null +++ b/tests/i2c-master/i2c-master.c @@ -0,0 +1,23 @@ +/* + * Feb 2017, Karl Palsson <karlp@tweak.net.au> + */ + +#include <libopencm3/stm32/i2c.h> +#include <libopencm3/stm32/rcc.h> +#include "hw.h" +#include "i2c-master.h" + + +void i2cm_init(void) { + rcc_periph_clock_enable(hw_details.periph_rcc); + rcc_periph_reset_pulse(hw_details.periph_rst); + i2c_set_standard_mode(hw_details.periph); + i2c_enable_ack(hw_details.periph); + //i2c_set_dutycycle(hw_details.periph, I2C_CCR_DUTY_DIV2); /* default, no need to do this really */ + i2c_set_clock_frequency(hw_details.periph, I2C_CR2_FREQ_42MHZ); + /* 42MHz / (100kHz * 2) */ + i2c_set_ccr(hw_details.periph, 210); + /* standard mode, freqMhz+1*/ + i2c_set_trise(hw_details.periph, 43); + i2c_peripheral_enable(hw_details.periph); +}
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