diff options
Diffstat (limited to 'spi/ade7758')
| -rw-r--r-- | spi/ade7758/README | 21 | ||||
| -rw-r--r-- | spi/ade7758/ade7758-phase-b-zx-irq-context.sr | bin | 0 -> 629 bytes | |||
| -rw-r--r-- | spi/ade7758/ade7758-phase-b-zx-irq-nocontext.sr | bin | 0 -> 633 bytes |
3 files changed, 21 insertions, 0 deletions
diff --git a/spi/ade7758/README b/spi/ade7758/README new file mode 100644 index 0000000..2b491fe --- /dev/null +++ b/spi/ade7758/README @@ -0,0 +1,21 @@ +50MHz capture of an ADE7758 SPI communications. +Note that Chip Select is _optional_ on this device, provided that you are +careful to only use valid, full length spi read/write requests. + +In this case, the chip is configured to provide interrupts on voltage zero +crossings, and the host MCU is reading the status register, and then the +appropriate (phase B) voltage/current registers. + +It is largely an example of SPI without CS, in spi mode 0,1. + +Two captures are provided. +ade7758-phaseB-zx-irq-context.sr: trigger with precapture on the IRQ pin falling edge. +ade7758-phaseB-zx-irq-nocontext.sr: trigger on spi CLK rising edge. + +Correct decodings with the ADE7758 decoder should show +RSTATUS: 0x400 +FREQ: 0x0 (frequency is from phase A, not connected on this device) +BVRMS: 0x10cd0c (context) or 0x10ccfa (nocontext) +BIRMS: 0x2ac (context) or 0x2a8 (nocontext) + +Anything else has gotten the SPI decoding wrong due to the lack of chip select. diff --git a/spi/ade7758/ade7758-phase-b-zx-irq-context.sr b/spi/ade7758/ade7758-phase-b-zx-irq-context.sr Binary files differnew file mode 100644 index 0000000..a3e9d3f --- /dev/null +++ b/spi/ade7758/ade7758-phase-b-zx-irq-context.sr diff --git a/spi/ade7758/ade7758-phase-b-zx-irq-nocontext.sr b/spi/ade7758/ade7758-phase-b-zx-irq-nocontext.sr Binary files differnew file mode 100644 index 0000000..c9b5630 --- /dev/null +++ b/spi/ade7758/ade7758-phase-b-zx-irq-nocontext.sr |