56 lines
1.4 KiB
Go
56 lines
1.4 KiB
Go
package sponsor
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// LICENSE
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// Copyright (c) evcc.io (andig, naltatis, premultiply)
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// This module is NOT covered by the MIT license. All rights reserved.
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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import (
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"os"
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"strings"
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"time"
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)
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func checkPulsares() (string, error) {
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f, err := os.OpenFile("/dev/PulsaresSerial", os.O_RDWR, 0o644)
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if err != nil {
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return "", nil
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}
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if _, err := f.Write([]byte{0x0E, 0x00, 0x61, 0x7C, 0xD2, 0x71}); err != nil {
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return "", err
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}
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// serial timeout
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time.AfterFunc(3*time.Second, func() {
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_ = f.Close()
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})
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var token strings.Builder
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b := make([]byte, 512)
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for {
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n, err := f.Read(b)
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if err != nil {
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return "", nil
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}
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token.WriteString(string(b[:n]))
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if token, ok := strings.CutSuffix(token.String(), "\x04"); ok {
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return token, nil
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}
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}
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}
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