| Line | Branch | Decision | Exec | Source |
|---|---|---|---|---|
| 1 | /** | |||
| 2 | * @file test_gpiochip.cpp | |||
| 3 | * | |||
| 4 | * @date Mar 12, 2019 | |||
| 5 | */ | |||
| 6 | ||||
| 7 | #include "pch.h" | |||
| 8 | ||||
| 9 | #include "gpio/gpio_ext.h" | |||
| 10 | ||||
| 11 | using ::testing::_; | |||
| 12 | ||||
| 13 | static int io_state = 0; | |||
| 14 | ||||
| 15 | static int initcalls = 0; | |||
| 16 | struct GoodChip : public GpioChip { | |||
| 17 | 2 | int init() override { | ||
| 18 | 2 | initcalls++; | ||
| 19 | 2 | return 0; | ||
| 20 | } | |||
| 21 | }; | |||
| 22 | ||||
| 23 | class TestChip1 : public GoodChip { | |||
| 24 | 2 | int readPad(size_t pin) override { | ||
| 25 |
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2 | if (pin & 0x01) |
| 26 | 1 | return 1; | ||
| 27 | 1 | return 0; | ||
| 28 | } | |||
| 29 | }; | |||
| 30 | ||||
| 31 | static TestChip1 testchip1; | |||
| 32 | ||||
| 33 | class TestChip2 : public GoodChip { | |||
| 34 | 2 | int writePad(size_t pin, int value) override { | ||
| 35 |
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2 | if (value) |
| 36 | 1 | io_state |= (1 << value); | ||
| 37 | else | |||
| 38 | 1 | io_state &= ~(1 << value); | ||
| 39 | ||||
| 40 | 2 | return 0; | ||
| 41 | } | |||
| 42 | }; | |||
| 43 | ||||
| 44 | static TestChip2 testchip2; | |||
| 45 | ||||
| 46 | static int calls_to_failed_chip = 0; | |||
| 47 | // This chip fails to start | |||
| 48 | class TestChip3 : public GpioChip { | |||
| 49 | ✗ | int writePad(size_t pin, int value) override { | ||
| 50 | ✗ | calls_to_failed_chip++; | ||
| 51 | ✗ | return 0; | ||
| 52 | } | |||
| 53 | ||||
| 54 | 1 | int init() override { | ||
| 55 | 1 | return -1; | ||
| 56 | } | |||
| 57 | }; | |||
| 58 | ||||
| 59 | static TestChip3 testchip3; | |||
| 60 | ||||
| 61 | 4 | TEST(gpioext, testGpioExt) { | ||
| 62 | 1 | int ret; | ||
| 63 | int chip1_base, chip2_base, chip3_base; | |||
| 64 | ||||
| 65 |
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1 | printf("====================================================================================== testGpioExt\r\n"); | |
| 66 | ||||
| 67 | /* should fail to register chip with zero gpios */ | |||
| 68 |
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1 | EXPECT_FALSE(gpiochip_register((brain_pin_e)(BRAIN_PIN_ONCHIP_LAST + 1), "invalid", testchip1, 0) > 0); | |
| 69 | ||||
| 70 | /* should fail to register chip with base overlapig on-chip gpios */ | |||
| 71 |
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1 | EXPECT_FALSE(gpiochip_register((brain_pin_e)(BRAIN_PIN_ONCHIP_LAST - 1), "invalid", testchip1, 0) > 0); | |
| 72 | ||||
| 73 |
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1 | chip1_base = gpiochip_register((brain_pin_e)(BRAIN_PIN_ONCHIP_LAST + 1), "input only", testchip1, 16); | |
| 74 |
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1 | EXPECT_TRUE(chip1_base > 0); | |
| 75 | ||||
| 76 |
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1 | EXPECT_EQ(16, gpiochips_get_total_pins()); | |
| 77 | ||||
| 78 | /* should fail to register chip overlapping other one */ | |||
| 79 |
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1 | EXPECT_FALSE(gpiochip_register((brain_pin_e)(BRAIN_PIN_ONCHIP_LAST + 1 + 15), "output only", testchip2, 16) > 0); | |
| 80 | ||||
| 81 |
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1 | chip2_base = gpiochip_register((brain_pin_e)(BRAIN_PIN_ONCHIP_LAST + 1 + 16), "output only", testchip2, 16); | |
| 82 |
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1 | EXPECT_TRUE(chip2_base > 0); | |
| 83 | ||||
| 84 | /* this chip will fail to init, but should be registered without errors */ | |||
| 85 |
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1 | chip3_base = gpiochip_register((brain_pin_e)(BRAIN_PIN_ONCHIP_LAST + 1 + 16 + 16), "failed chip", testchip3, 16); | |
| 86 |
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1 | EXPECT_TRUE(chip2_base > 0); | |
| 87 | ||||
| 88 |
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1 | EXPECT_EQ(48, gpiochips_get_total_pins()); | |
| 89 | ||||
| 90 | /* init 3 chips, one will fail */ | |||
| 91 |
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1 | ret = gpiochips_init(); | |
| 92 |
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1 | EXPECT_EQ(32, ret); | |
| 93 | ||||
| 94 | /* two drivers should be inited */ | |||
| 95 |
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1 | EXPECT_EQ(2, initcalls); | |
| 96 | ||||
| 97 | /* gpio reads */ | |||
| 98 |
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1 | EXPECT_TRUE(gpiochips_readPad((Gpio)(chip1_base + 0)) == 0); | |
| 99 |
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1 | EXPECT_TRUE(gpiochips_readPad((Gpio)(chip1_base + 1)) != 0); | |
| 100 | ||||
| 101 | /* gpio write */ | |||
| 102 |
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1 | gpiochips_writePad((Gpio)(chip2_base + 0), 0); | |
| 103 |
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1 | gpiochips_writePad((Gpio)(chip2_base + 1), 1); | |
| 104 |
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1 | EXPECT_EQ(0x02, io_state); | |
| 105 | ||||
| 106 | /* try to access failed chip */ | |||
| 107 |
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1 | EXPECT_ANY_THROW(gpiochips_writePad((Gpio)(chip3_base + 0), 0)); | |
| 108 |
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1 | EXPECT_ANY_THROW(gpiochips_writePad((Gpio)(chip3_base + 1), 1)); | |
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1 | EXPECT_EQ(0, calls_to_failed_chip); | |
| 110 | ||||
| 111 | // todo: make readPad fail in a similar way? | |||
| 112 | ||||
| 113 | /* read/write outside range */ | |||
| 114 |
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1 | EXPECT_TRUE(gpiochips_readPad((Gpio)(chip1_base - 1)) < 0); | |
| 115 |
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1 | EXPECT_ANY_THROW(gpiochips_writePad((Gpio)(chip1_base - 1), 1)); | |
| 116 | ||||
| 117 |
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1 | EXPECT_TRUE(gpiochips_readPad((Gpio)(chip3_base + 16)) < 0); | |
| 118 |
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1 | EXPECT_ANY_THROW(gpiochips_writePad((Gpio)(chip3_base + 16), 1)); | |
| 119 | ||||
| 120 | 1 | } | ||
| 121 |