[dif/adc_ctrl] Implement value-get DIFs
This implements the value-get DIFs and corresponding unit tests for the
ADC Controller.
Signed-off-by: Timothy Trippel <ttrippel@google.com>
diff --git a/sw/device/lib/dif/dif_adc_ctrl.c b/sw/device/lib/dif/dif_adc_ctrl.c
index 85a724f..6764d35 100644
--- a/sw/device/lib/dif/dif_adc_ctrl.c
+++ b/sw/device/lib/dif/dif_adc_ctrl.c
@@ -334,3 +334,61 @@
return kDifOk;
}
+
+dif_result_t dif_adc_ctrl_get_triggered_value(const dif_adc_ctrl_t *adc_ctrl,
+ dif_adc_ctrl_channel_t channel,
+ uint16_t *value) {
+ if (adc_ctrl == NULL || value == NULL) {
+ return kDifBadArg;
+ }
+
+ uint32_t value_reg;
+
+#define DIF_ADC_CTRL_CHANNEL_TRIG_VALUE_CASE_(channel_) \
+ case kDifAdcCtrlChannel##channel_: \
+ value_reg = mmio_region_read32( \
+ adc_ctrl->base_addr, ADC_CTRL_ADC_CHN_VAL_##channel_##_REG_OFFSET); \
+ *value = bitfield_field32_read( \
+ value_reg, \
+ ADC_CTRL_ADC_CHN_VAL_##channel_##_ADC_CHN_VALUE_INTR_##channel_##_FIELD); \
+ break;
+
+ switch (channel) {
+ DIF_ADC_CTRL_CHANNEL_LIST(DIF_ADC_CTRL_CHANNEL_TRIG_VALUE_CASE_)
+ default:
+ return kDifBadArg;
+ }
+
+#undef DIF_ADC_CTRL_CHANNEL_TRIG_VALUE_CASE_
+
+ return kDifOk;
+}
+
+dif_result_t dif_adc_ctrl_get_latest_value(const dif_adc_ctrl_t *adc_ctrl,
+ dif_adc_ctrl_channel_t channel,
+ uint16_t *value) {
+ if (adc_ctrl == NULL || value == NULL) {
+ return kDifBadArg;
+ }
+
+ uint32_t value_reg;
+
+#define DIF_ADC_CTRL_CHANNEL_LATEST_VALUE_CASE_(channel_) \
+ case kDifAdcCtrlChannel##channel_: \
+ value_reg = mmio_region_read32( \
+ adc_ctrl->base_addr, ADC_CTRL_ADC_CHN_VAL_##channel_##_REG_OFFSET); \
+ *value = bitfield_field32_read( \
+ value_reg, \
+ ADC_CTRL_ADC_CHN_VAL_##channel_##_ADC_CHN_VALUE_##channel_##_FIELD); \
+ break;
+
+ switch (channel) {
+ DIF_ADC_CTRL_CHANNEL_LIST(DIF_ADC_CTRL_CHANNEL_LATEST_VALUE_CASE_)
+ default:
+ return kDifBadArg;
+ }
+
+#undef DIF_ADC_CTRL_CHANNEL_LATEST_VALUE_CASE_
+
+ return kDifOk;
+}
diff --git a/sw/device/lib/dif/dif_adc_ctrl_unittest.cc b/sw/device/lib/dif/dif_adc_ctrl_unittest.cc
index f0671d0..162933b 100644
--- a/sw/device/lib/dif/dif_adc_ctrl_unittest.cc
+++ b/sw/device/lib/dif/dif_adc_ctrl_unittest.cc
@@ -326,5 +326,59 @@
EXPECT_EQ(is_enabled, kDifToggleDisabled);
}
+class GetTriggeredValueTest : public AdcCtrlTest {};
+
+TEST_F(GetTriggeredValueTest, NullArgs) {
+ uint16_t value;
+ EXPECT_DIF_BADARG(
+ dif_adc_ctrl_get_triggered_value(nullptr, kDifAdcCtrlChannel0, &value));
+ EXPECT_DIF_BADARG(dif_adc_ctrl_get_triggered_value(
+ &adc_ctrl_, kDifAdcCtrlChannel0, nullptr));
+}
+
+TEST_F(GetTriggeredValueTest, BadChannel) {
+ uint16_t value;
+ EXPECT_DIF_BADARG(dif_adc_ctrl_get_triggered_value(
+ &adc_ctrl_,
+ static_cast<dif_adc_ctrl_channel_t>(ADC_CTRL_PARAM_NUM_ADC_CHANNEL),
+ &value));
+}
+
+TEST_F(GetTriggeredValueTest, Success) {
+ uint16_t value;
+ EXPECT_READ32(ADC_CTRL_ADC_CHN_VAL_0_REG_OFFSET,
+ {{ADC_CTRL_ADC_CHN_VAL_0_ADC_CHN_VALUE_INTR_0_OFFSET, 1023}});
+ EXPECT_DIF_OK(dif_adc_ctrl_get_triggered_value(&adc_ctrl_,
+ kDifAdcCtrlChannel0, &value));
+ EXPECT_EQ(value, 1023);
+}
+
+class GetLatestValueTest : public AdcCtrlTest {};
+
+TEST_F(GetLatestValueTest, NullArgs) {
+ uint16_t value;
+ EXPECT_DIF_BADARG(
+ dif_adc_ctrl_get_latest_value(nullptr, kDifAdcCtrlChannel0, &value));
+ EXPECT_DIF_BADARG(
+ dif_adc_ctrl_get_latest_value(&adc_ctrl_, kDifAdcCtrlChannel0, nullptr));
+}
+
+TEST_F(GetLatestValueTest, BadChannel) {
+ uint16_t value;
+ EXPECT_DIF_BADARG(dif_adc_ctrl_get_latest_value(
+ &adc_ctrl_,
+ static_cast<dif_adc_ctrl_channel_t>(ADC_CTRL_PARAM_NUM_ADC_CHANNEL),
+ &value));
+}
+
+TEST_F(GetLatestValueTest, Success) {
+ uint16_t value;
+ EXPECT_READ32(ADC_CTRL_ADC_CHN_VAL_0_REG_OFFSET,
+ {{ADC_CTRL_ADC_CHN_VAL_0_ADC_CHN_VALUE_0_OFFSET, 1023}});
+ EXPECT_DIF_OK(
+ dif_adc_ctrl_get_latest_value(&adc_ctrl_, kDifAdcCtrlChannel0, &value));
+ EXPECT_EQ(value, 1023);
+}
+
} // namespace
} // namespace dif_adc_ctrl_unittest
