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Fix STM32H7 FDCAN FIFO acknowledgment process

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Fix FDCAN FIFO acknowledge register definition to make it correct for H7
MCUs. Previous definition contained hardcoded offset instead of using
MCU-specific macro.

Fix incorrect decoding of buffer element size. During decoding, value
returned was erratically set to 7 instead of setting 4th LSB. Buffer
element size was then always reported as 15 bytes.
This commit is contained in:
Eduard Drusa
2021-05-18 15:34:04 +02:00
committed by Karl Palsson
parent 9478931d69
commit e9c68ff9e8
2 changed files with 6 additions and 4 deletions
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6
lib/stm32/h7/fdcan.c
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@@ -79,7 +79,7 @@ unsigned fdcan_get_fifo_element_size(uint32_t canport, unsigned fifo_id)
}
/* Mask is unshifted and at this point, element_size is unshifted too */
return 8 + fdcan_dlc_to_length((element_size & FDCAN_RXESC_F0DS_MASK) | 0x7);
return 8 + fdcan_dlc_to_length((element_size & FDCAN_RXESC_F0DS_MASK) | 0x8);
}
/** Returns actual size of transmit entry in transmit queue/FIFO for given CAN port.
@@ -95,7 +95,7 @@ unsigned fdcan_get_txbuf_element_size(uint32_t canport)
{
unsigned element_size;
element_size = (FDCAN_TXESC(canport) >> FDCAN_TXESC_TBDS_SHIFT) & FDCAN_TXESC_TBDS_MASK;
return 8 + fdcan_dlc_to_length((element_size & FDCAN_TXESC_TBDS_MASK) | 0x7);
return 8 + fdcan_dlc_to_length((element_size & FDCAN_TXESC_TBDS_MASK) | 0x8);
}
/** Initialize allocation of standard filter block in CAN message RAM.
@@ -468,4 +468,4 @@ void fdcan_set_fifo_locked_mode(uint32_t canport, bool locked)
}
}
/**@}*/
/**@}*/