The AD7740 v-to-f converters don't work as well as I'd like, and I'm thinking about just using a little microcontroller, like the STM32G031 to do my A/D conversion. While I could generate a pulse train with frequency or period proportional to voltage, I got to looking at bit files that include a UART. For the tiny amounts of data I need to send, the simple UART with 115kbaud rate should work fine at normal servo thread periods.
So, I have tried both stock *UA* bitfiles and a custom bitfile with UART incorporated, and I get errors about InstanceStride not matching expectations with either. Turning on debug_idrom, I see that InstanceStride is either 0x04 or 0x40, but the expected value is 0x10. It isn't clear to me whether I want to select Instance Stride 0 or 1 in my vhdl, but neither would match the expected value. hm2/hm2_7i90.0: Instance Stride 0: 0x00000004 hm2/hm2_7i90.0: Instance Stride 1: 0x00000040 hm2/hm2_7i90.0: Register Stride 0: 0x00000100 hm2/hm2_7i90.0: Register Stride 1: 0x00000100 hm2/hm2_7i90.0: inconsistent Module Descriptor for UART Transmit Channel, not loading driver hm2/hm2_7i90.0: Version = 0, expected 0 hm2/hm2_7i90.0: NumRegisters = 4, expected 4 hm2/hm2_7i90.0: InstanceStride = 0x00000040, expected 0x00000010 hm2/hm2_7i90.0: MultipleRegisters = 0x0000000F, expected 0x0000000F hm2/hm2_7i90.0: inconsistent Module Descriptor! hm2/hm2_7i90.0: failed to parse Module Descriptor 4 Am I doing something wrong, has a bug crept into the code, or is this just untested territory? If it is a bug, is it in the vhdl or the hostmot2 code? Thanks again, -- Ralph _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
