diff options
| author | iabdalkader <i.abdalkader@gmail.com> | 2018-03-19 15:09:00 +0200 |
|---|---|---|
| committer | Damien George <damien.p.george@gmail.com> | 2018-03-20 23:25:01 +1100 |
| commit | 24a9facd897bd8727dc7fc05bdb7a36d5232316e (patch) | |
| tree | 52ff4082d532b77050ab758699dc4e0a74f46ddc | |
| parent | 2ebc538d63fedcddf89d8c9f0e86b2bb00ff164d (diff) | |
stm32/i2c: Add H7 I2C timing configurations.
Found the timing for full (400 KHz) and FM+ (1MHz) in the HAL examples, and
used CubeMX to calculate the standard value (100KHz).
| -rw-r--r-- | ports/stm32/i2c.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/ports/stm32/i2c.c b/ports/stm32/i2c.c index f072a75b8..e17472cb4 100644 --- a/ports/stm32/i2c.c +++ b/ports/stm32/i2c.c @@ -131,9 +131,9 @@ const pyb_i2c_obj_t pyb_i2c_obj[] = { #endif }; -#if defined(STM32F7) || defined(STM32L4) +#if defined(STM32F7) || defined(STM32L4) || defined(STM32H7) -// The STM32F0, F3, F7 and L4 use a TIMINGR register rather than ClockSpeed and +// The STM32F0, F3, F7, H7 and L4 use a TIMINGR register rather than ClockSpeed and // DutyCycle. #if defined(STM32F746xx) @@ -161,6 +161,17 @@ const pyb_i2c_obj_t pyb_i2c_obj[] = { #define MICROPY_HW_I2C_BAUDRATE_DEFAULT (PYB_I2C_SPEED_FULL) #define MICROPY_HW_I2C_BAUDRATE_MAX (PYB_I2C_SPEED_FAST) +#elif defined(STM32H7) + +// I2C TIMINGs obtained from the STHAL examples. +#define MICROPY_HW_I2C_BAUDRATE_TIMING { \ + {PYB_I2C_SPEED_STANDARD, 0x40604E73}, \ + {PYB_I2C_SPEED_FULL, 0x00901954}, \ + {PYB_I2C_SPEED_FAST, 0x10810915}, \ + } +#define MICROPY_HW_I2C_BAUDRATE_DEFAULT (PYB_I2C_SPEED_FULL) +#define MICROPY_HW_I2C_BAUDRATE_MAX (PYB_I2C_SPEED_FAST) + #elif defined(STM32L4) // The value 0x90112626 was obtained from the DISCOVERY_I2C1_TIMING constant |