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nrf: fix race in i2c

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This commit is contained in:
Yurii Soldak
2022-01-17 10:29:48 +01:00
committed by Ron Evans
parent 431e223803
commit cc1a95a489
1 changed files with 4 additions and 1 deletions
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src/machine/machine_nrf.go
+4 -1
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@@ -1,3 +1,4 @@
//go:build nrf
// +build nrf // +build nrf
package machine package machine
@@ -284,7 +285,9 @@ func (i2c *I2C) Tx(addr uint16, w, r []byte) (err error) {
// To trigger stop task when last byte is received, set before resume task. // To trigger stop task when last byte is received, set before resume task.
i2c.Bus.SHORTS.Set(nrf.TWI_SHORTS_BB_STOP) i2c.Bus.SHORTS.Set(nrf.TWI_SHORTS_BB_STOP)
} }
i2c.Bus.TASKS_RESUME.Set(1) // re-start transmission for reading if i > 0 {
i2c.Bus.TASKS_RESUME.Set(1) // re-start transmission for reading
}
if r[i], err = i2c.readByte(); err != nil { if r[i], err = i2c.readByte(); err != nil {
// goto/break are practically equivalent here, // goto/break are practically equivalent here,
// but goto makes this more easily understandable for maintenance. // but goto makes this more easily understandable for maintenance.