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nrf5x_common: Clear I2C periph shorts

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The I2C peripheral's shortcuts are used with the read and write register
to automatically stop the I2C transaction or to continue with the next
stage.

With simple I2C read and write bytes these shorts are not used, but are
also not cleared by the function in all cases, causing it to use the
shortcut configuration set by a previous function call. This patch
ensures that the shorts are always set by the read and write functions
This commit is contained in:
Koen Zandberg 2023-06-14 10:33:52 +02:00
parent e2c5ea0009
commit e5d25e0b04
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GPG Key ID: BA1718B37D79F51C
1 changed files with 6 additions and 0 deletions
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6
cpu/nrf5x_common/periph/i2c_nrf52_nrf9160.c
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@ -251,6 +251,9 @@ int i2c_read_bytes(i2c_t dev, uint16_t addr, void *data, size_t len,
if (!(flags & I2C_NOSTOP)) {
bus(dev)->SHORTS = TWIM_SHORTS_LASTRX_STOP_Msk;
}
else {
bus(dev)->SHORTS = 0;
}
/* Start transmission */
bus(dev)->TASKS_STARTRX = 1;
@ -309,6 +312,9 @@ int i2c_write_bytes(i2c_t dev, uint16_t addr, const void *data, size_t len,
if (!(flags & I2C_NOSTOP)) {
bus(dev)->SHORTS = TWIM_SHORTS_LASTTX_STOP_Msk;
}
else {
bus(dev)->SHORTS = 0;
}
bus(dev)->TASKS_STARTTX = 1;
return finish(dev);