core/comm/i2c - An I2C slave implemented in Verilog

Age	Commit message (Collapse)	Author
2015-12-13	whack copyrightsHEAD master	Paul Selkirk

2015-11-12	Change reset to active-low.	Paul Selkirk

2015-04-29	Cleanup: add error port, remove dummy register.	Paul Selkirk

2015-03-31	Don't delay register reads in i2c_regs.	Paul Selkirk

2015-03-17	Rearrange cores.	Paul Selkirk

2014-11-18	i2c_device_addr as output	Paul Selkirk

2014-09-11	correct size of I2C FSM state values	Paul Selkirk
	When adding new I2C states, I neglected to update the size of all the state parameter values, so e.g. I2C_WAITSTOP = 14'b1 << 15; This overflows to 0, which manifests as the I2C bus hanging when asked to access an unsupported device address.
2014-09-03	fix i2c read buffer overrun	Paul Selkirk
	If a client requests data beyond the end of the coretest response, i2c_core could wait forever for txd_syn to be asserted, locking up the system. The current solution is to assume that data will be available by the time the client sends the READ_CMD and then issues the i2c read request; if no data is available, i2c_core returns 0x00. Given the relative speeds of the i2c bus and the FPGA, this seems justifiable, but it could use more scrutiny.
2014-08-28	initial commit of I2C code for coretest	Paul Selkirk