mirror of https://github.com/m-labs/artiq.git
62 lines
1.8 KiB
Python
62 lines
1.8 KiB
Python
import unittest
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from artiq.experiment import *
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from artiq.test.hardware_testbench import ExperimentCase
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from artiq.language.core import (kernel, delay_mu, delay)
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from artiq.language.units import us
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from artiq.coredevice import spi
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_SDCARD_SPI_CONFIG = (0*spi.SPI_OFFLINE | 0*spi.SPI_CS_POLARITY |
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0*spi.SPI_CLK_POLARITY | 0*spi.SPI_CLK_PHASE |
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0*spi.SPI_LSB_FIRST | 0*spi.SPI_HALF_DUPLEX)
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class CardTest(EnvExperiment):
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def build(self):
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self.setattr_device("core")
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self.setattr_device("spi_mmc")
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@kernel
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def run(self):
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self.core.reset()
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self.core.break_realtime()
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response = 0xff
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self.spi_mmc.set_config(_SDCARD_SPI_CONFIG, 500*kHz, 500*kHz)
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self.spi_mmc.set_xfer(0, 8, 0)
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for i in range(10):
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self.spi_mmc.write(0xffffffff)
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delay(-5*us)
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delay(100*us)
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self.spi_mmc.set_xfer(1, 8, 0)
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self.spi_mmc.write(0x40000000)
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delay(-5*us)
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self.spi_mmc.write(0x00000000)
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delay(-5*us)
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self.spi_mmc.write(0x00000000)
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delay(-5*us)
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self.spi_mmc.write(0x00000000)
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delay(-5*us)
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self.spi_mmc.write(0x00000000)
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delay(-5*us)
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self.spi_mmc.write(0x95000000)
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delay(-5*us)
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self.spi_mmc.set_xfer(1, 0, 24)
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self.spi_mmc.write(0xffffffff)
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response = self.spi_mmc.read_sync()
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sd_response = False
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for i in range(3):
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if ((response >> 8*i) & 0x0000ff) == 0x01:
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sd_response = True
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break
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self.set_dataset("sd_response", sd_response)
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class SDTest(ExperimentCase):
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def test(self):
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self.execute(CardTest)
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self.assertTrue(self.dataset_mgr.get("sd_response"))
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