forked from M-Labs/artiq
pipistrello: try with fewer leds/pmod ttl
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0d431cb019
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f39208c95a
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@ -196,15 +196,14 @@ trce -v 12 -fastpaths -tsi {build_name}.tsi -o {build_name}.twr {build_name}.ncd
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self.submodules += phy
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rtio_channels.append(rtio.Channel.from_phy(phy, ofifo_depth=4))
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for led_number in range(4):
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for led_number in range(2):
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phy = ttl_simple.Output(platform.request("user_led", led_number))
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self.submodules += phy
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rtio_channels.append(rtio.Channel.from_phy(phy, ofifo_depth=4))
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spi_pins = self.platform.request("pmod_extended_spi", 0)
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for i, p in enumerate((spi_pins.int, spi_pins.rst,
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spi_pins.d0, spi_pins.d1)):
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for i, p in enumerate((spi_pins.int, spi_pins.rst)):
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phy = ttl_simple.Inout(p)
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self.submodules += phy
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rtio_channels.append(rtio.Channel.from_phy(phy, ififo_depth=4,
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@ -220,7 +219,7 @@ trce -v 12 -fastpaths -tsi {build_name}.tsi -o {build_name}.twr {build_name}.ncd
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self.submodules += phy
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self.config["RTIO_FIRST_SPI_CHANNEL"] = len(rtio_channels)
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rtio_channels.append(rtio.Channel.from_phy(
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phy, ofifo_depth=64, ififo_depth=64))
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phy, ofifo_depth=256, ififo_depth=256))
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self.config["RTIO_DDS_CHANNEL"] = len(rtio_channels)
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self.config["DDS_CHANNEL_COUNT"] = 8
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@ -128,19 +128,11 @@ When plugged to an adapter, the NIST QC1 hardware can be used. The TTL lines are
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+--------------+------------+--------------+
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| 19 | USER_LED_2 | Output |
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+--------------+------------+--------------+
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| 20 | USER_LED_3 | Output |
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| 20 | PMOD_4 | Input+Output |
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+--------------+------------+--------------+
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| 21 | USER_LED_4 | Output |
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| 21 | PMOD_5 | Input+Output |
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+--------------+------------+--------------+
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| 22 | PMOD_4 | Input+Output |
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+--------------+------------+--------------+
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| 23 | PMOD_5 | Input+Output |
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+--------------+------------+--------------+
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| 24 | PMOD_6 | Input+Output |
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+--------------+------------+--------------+
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| 25 | PMOD_7 | Input+Output |
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+--------------+------------+--------------+
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| 26 | TTL15 | Clock |
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| 22 | TTL15 | Clock |
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+--------------+------------+--------------+
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The input only limitation on channels 0 and 1 comes from the QC-DAQ adapter. When the adapter is not used (and physically unplugged from the Pipistrello board), the corresponding pins on the Pipistrello can be used as outputs. Do not configure these channels as outputs when the adapter is plugged, as this would cause electrical contention.
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@ -153,5 +145,5 @@ Interface Type 2 (SPI) and 2A (expanded SPI):
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+--------------+--------+--------+--------+--------+
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| RTIO channel | CS_N | MOSI | MISO | CLK |
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+==============+========+========+========+========+
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| 27 | PMOD_0 | PMOD_1 | PMOD_2 | PMOD_3 |
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| 23 | PMOD_0 | PMOD_1 | PMOD_2 | PMOD_3 |
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+--------------+--------+--------+--------+--------+
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