d2b17de145
In general, this commit allows the I2C slave to recognize when writes are occuring in serial - and seperate them out into independant commands. In order to achieve this it: * Corrects some setup parameters for the I2C state machine. - Enables clock stretching - Enables recommendations from the datasheet * Participates in clock stretching. This is done by leaving the `R_RD_REQ` register of `IC_INTR_STAT` set until the slave has responded with some bytes (in `respond_to_write`). * Recognizes `FIRST_DATA_BYTE` of `IC_DATA_CMD`, which indicates to a slave-receiver than the current byte is part of a new transaction. * Uses a state machine heavily inspired by the one in rp-rs as an implementation detail. This is no more correct than the existing approach, but makes the code significantly easier to reason about. * Two additional errors were added, both indicating that the provided buffer is too small for the message from the master-sender. As a convenience, they have the same assosciated data so that matching can be performed in the event that the call site handles messages in a consistent way. |
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| .. | ||
| src | ||
| build.rs | ||
| Cargo.toml | ||
| funcsel.txt | ||
| link-rp.x.in | ||