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[Nuvoton] Remove unnecessary UART INT in UART DMA transfer 

In UART DMA transfer, it is PDMA INT rather than UART INT to go INT path
pull/6392/head
ccli8 2018-03-19 17:52:01 +08:00
parent 7c30faf69d
commit 7ed3bac85d
4 changed files with 32 additions and 0 deletions
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8
targets/TARGET_NUVOTON/TARGET_M451/serial_api.c
View File

@ -503,6 +503,10 @@ int serial_tx_asynch(serial_t *obj, const void *tx, size_t tx_length, uint8_t tx
// Register DMA event handler
dma_set_handler(obj->serial.dma_chn_id_tx, (uint32_t) uart_dma_handler_tx, (uint32_t) obj, DMA_EVENT_ALL);
serial_tx_enable_interrupt(obj, handler, 1);
/* We needn't actually enable UART INT to go UART ISR -> handler.
* Instead, as PDMA INT is triggered, we will go PDMA ISR -> UART ISR -> handler
* with serial_tx/rx_enable_interrupt having set up this call path. */
UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), UART_INTEN_THREIEN_Msk);
((UART_T *) NU_MODBASE(obj->serial.uart))->INTEN |= UART_INTEN_TXPDMAEN_Msk; // Start DMA transfer
}
@ -566,6 +570,10 @@ void serial_rx_asynch(serial_t *obj, void *rx, size_t rx_length, uint8_t rx_widt
// Register DMA event handler
dma_set_handler(obj->serial.dma_chn_id_rx, (uint32_t) uart_dma_handler_rx, (uint32_t) obj, DMA_EVENT_ALL);
serial_rx_enable_interrupt(obj, handler, 1);
/* We needn't actually enable UART INT to go UART ISR -> handler.
* Instead, as PDMA INT is triggered, we will go PDMA ISR -> UART ISR -> handler
* with serial_tx/rx_enable_interrupt having set up this call path. */
UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), (UART_INTEN_RDAIEN_Msk | UART_INTEN_RXTOIEN_Msk));
((UART_T *) NU_MODBASE(obj->serial.uart))->INTEN |= UART_INTEN_RXPDMAEN_Msk; // Start DMA transfer
}
}

8
targets/TARGET_NUVOTON/TARGET_M480/serial_api.c
View File

@ -561,6 +561,10 @@ int serial_tx_asynch(serial_t *obj, const void *tx, size_t tx_length, uint8_t tx
// Register DMA event handler
dma_set_handler(obj->serial.dma_chn_id_tx, (uint32_t) uart_dma_handler_tx, (uint32_t) obj, DMA_EVENT_ALL);
serial_tx_enable_interrupt(obj, handler, 1);
/* We needn't actually enable UART INT to go UART ISR -> handler.
* Instead, as PDMA INT is triggered, we will go PDMA ISR -> UART ISR -> handler
* with serial_tx/rx_enable_interrupt having set up this call path. */
UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), UART_INTEN_THREIEN_Msk);
((UART_T *) NU_MODBASE(obj->serial.uart))->INTEN |= UART_INTEN_TXPDMAEN_Msk; // Start DMA transfer
}
@ -622,6 +626,10 @@ void serial_rx_asynch(serial_t *obj, void *rx, size_t rx_length, uint8_t rx_widt
// Register DMA event handler
dma_set_handler(obj->serial.dma_chn_id_rx, (uint32_t) uart_dma_handler_rx, (uint32_t) obj, DMA_EVENT_ALL);
serial_rx_enable_interrupt(obj, handler, 1);
/* We needn't actually enable UART INT to go UART ISR -> handler.
* Instead, as PDMA INT is triggered, we will go PDMA ISR -> UART ISR -> handler
* with serial_tx/rx_enable_interrupt having set up this call path. */
UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), (UART_INTEN_RDAIEN_Msk | UART_INTEN_RXTOIEN_Msk));
((UART_T *) NU_MODBASE(obj->serial.uart))->INTEN |= UART_INTEN_RXPDMAEN_Msk; // Start DMA transfer
}
}

8
targets/TARGET_NUVOTON/TARGET_NANO100/serial_api.c
View File

@ -458,6 +458,10 @@ int serial_tx_asynch(serial_t *obj, const void *tx, size_t tx_length, uint8_t tx
// Register DMA event handler
dma_set_handler(obj->serial.dma_chn_id_tx, (uint32_t) uart_dma_handler_tx, (uint32_t) obj, DMA_EVENT_ALL);
serial_tx_enable_interrupt(obj, handler, 1);
/* We needn't actually enable UART INT to go UART ISR -> handler.
* Instead, as PDMA INT is triggered, we will go PDMA ISR -> UART ISR -> handler
* with serial_tx/rx_enable_interrupt having set up this call path. */
UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), UART_IER_THRE_IE_Msk);
PDMA_Trigger(obj->serial.dma_chn_id_tx);
((UART_T *) NU_MODBASE(obj->serial.uart))->CTL |= UART_CTL_DMA_TX_EN_Msk; // Start DMA transfer
}
@ -514,6 +518,10 @@ void serial_rx_asynch(serial_t *obj, void *rx, size_t rx_length, uint8_t rx_widt
// Register DMA event handler
dma_set_handler(obj->serial.dma_chn_id_rx, (uint32_t) uart_dma_handler_rx, (uint32_t) obj, DMA_EVENT_ALL);
serial_rx_enable_interrupt(obj, handler, 1);
/* We needn't actually enable UART INT to go UART ISR -> handler.
* Instead, as PDMA INT is triggered, we will go PDMA ISR -> UART ISR -> handler
* with serial_tx/rx_enable_interrupt having set up this call path. */
UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), (UART_IER_RDA_IE_Msk | UART_IER_RTO_IE_Msk));
PDMA_Trigger(obj->serial.dma_chn_id_rx);
((UART_T *) NU_MODBASE(obj->serial.uart))->CTL |= UART_CTL_DMA_RX_EN_Msk; // Start DMA transfer
}

8
targets/TARGET_NUVOTON/TARGET_NUC472/serial_api.c
View File

@ -543,6 +543,10 @@ int serial_tx_asynch(serial_t *obj, const void *tx, size_t tx_length, uint8_t tx
// Register DMA event handler
dma_set_handler(obj->serial.dma_chn_id_tx, (uint32_t) uart_dma_handler_tx, (uint32_t) obj, DMA_EVENT_ALL);
serial_tx_enable_interrupt(obj, handler, 1);
/* We needn't actually enable UART INT to go UART ISR -> handler.
* Instead, as PDMA INT is triggered, we will go PDMA ISR -> UART ISR -> handler
* with serial_tx/rx_enable_interrupt having set up this call path. */
UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), UART_INTEN_THREIEN_Msk);
((UART_T *) NU_MODBASE(obj->serial.uart))->INTEN |= UART_INTEN_TXPDMAEN_Msk; // Start DMA transfer
}
@ -604,6 +608,10 @@ void serial_rx_asynch(serial_t *obj, void *rx, size_t rx_length, uint8_t rx_widt
// Register DMA event handler
dma_set_handler(obj->serial.dma_chn_id_rx, (uint32_t) uart_dma_handler_rx, (uint32_t) obj, DMA_EVENT_ALL);
serial_rx_enable_interrupt(obj, handler, 1);
/* We needn't actually enable UART INT to go UART ISR -> handler.
* Instead, as PDMA INT is triggered, we will go PDMA ISR -> UART ISR -> handler
* with serial_tx/rx_enable_interrupt having set up this call path. */
UART_DISABLE_INT(((UART_T *) NU_MODBASE(obj->serial.uart)), (UART_INTEN_RDAIEN_Msk | UART_INTEN_RXTOIEN_Msk));
((UART_T *) NU_MODBASE(obj->serial.uart))->INTEN |= UART_INTEN_RXPDMAEN_Msk; // Start DMA transfer
}
}