# PtSpotOracle

[Git Source](https://github.com/Ion-Protocol/ion-protocol/blob/88cc595825f1dc2eb738fb93e172a3e8ab7a5c43/src/oracles/spot/PtSpotOracle.sol)

**Inherits:** SpotOracle

Spot Oracle for PT MARKETs

*This contract assumes that the SY is pegged 1:1 with the underlying asset of IonPool. This is a major assumption to be aware of since this oracle will return a valuation in SY, which may or may not be the same as the underlying in the IonPool.*

### [State Variables](https://docs.ionprotocol.io/devs/smart-contract-architecture/oracles/spot/broken-reference) <a href="#state-variables" id="state-variables"></a>

#### [MARKET](https://docs.ionprotocol.io/devs/smart-contract-architecture/oracles/spot/broken-reference) <a href="#market" id="market"></a>

```
IPMarketV3 public immutable MARKET;
```

#### [TWAP\_DURATION](https://docs.ionprotocol.io/devs/smart-contract-architecture/oracles/spot/broken-reference) <a href="#twap_duration" id="twap_duration"></a>

```
uint32 public immutable TWAP_DURATION;
```

### [Functions](https://docs.ionprotocol.io/devs/smart-contract-architecture/oracles/spot/broken-reference) <a href="#functions" id="functions"></a>

#### [constructor](https://docs.ionprotocol.io/devs/smart-contract-architecture/oracles/spot/broken-reference) <a href="#constructor" id="constructor"></a>

Construct a new `PtSpotOracle` instance

```
constructor(
    IPMarketV3 _market,
    uint32 _twapDuration,
    uint256 _ltv,
    address _reserveOracle
)
    SpotOracle(_ltv, _reserveOracle);
```

**Parameters**

| Name             | Type         | Description                                |
| ---------------- | ------------ | ------------------------------------------ |
| `_market`        | `IPMarketV3` | The Pendle Market to get the PT price from |
| `_twapDuration`  | `uint32`     | The duration of the TWAP                   |
| `_ltv`           | `uint256`    | The Loan To Value ratio                    |
| `_reserveOracle` | `address`    | The oracle to get the reserve price from   |

#### [getPrice](https://docs.ionprotocol.io/devs/smart-contract-architecture/oracles/spot/broken-reference) <a href="#getprice" id="getprice"></a>

Gets the price of the collateral asset in ETH.

*Overridden by collateral specific spot oracle contracts.*

```
function getPrice() public view override returns (uint256 price);
```

**Returns**

| Name    | Type      | Description                 |
| ------- | --------- | --------------------------- |
| `price` | `uint256` | of the asset in ETH. \[WAD] |

### [Errors](https://docs.ionprotocol.io/devs/smart-contract-architecture/oracles/spot/broken-reference) <a href="#errors" id="errors"></a>

#### [InsufficientOracleSlots](https://docs.ionprotocol.io/devs/smart-contract-architecture/oracles/spot/broken-reference) <a href="#insufficientoracleslots" id="insufficientoracleslots"></a>

```
error InsufficientOracleSlots(uint256 currentSlots);
```