uhk/KSDK_2.0_MK22FN512xxx12
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Make the I2C driver able to handle variable length messages by reading the first byte of the message (the message length) and update transfer.dataSize accordingly.

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László Monda
2017-09-25 03:00:37 +02:00
parent cd173f98d1
commit 7142722eed
1 changed files with 6 additions and 1 deletions
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7
devices/MK22F51212/drivers/fsl_i2c.c
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@@ -387,7 +387,12 @@ static status_t I2C_MasterTransferRunStateMachine(I2C_Type *base, i2c_master_han
} }
/* Read the data byte into the transfer buffer. */ /* Read the data byte into the transfer buffer. */
*handle->transfer.data = base->D; uint8_t data = base->D;
if (handle->userData) {
handle->transfer.dataSize = 2 + data; // 2 byte hash length + payload length
handle->userData = NULL;
}
*handle->transfer.data = data;
handle->transfer.data++; handle->transfer.data++;
} }
break; break;