pulp-runtime/drivers/spim.c
2020-05-11 14:18:06 +02:00

63 lines
1.6 KiB
C

/*
* Copyright (C) 2019 ETH Zurich, University of Bologna
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* @Author: Alfio Di Mauro
* @Date: 2020-03-23 09:33:29
* @Last Modified by: Alfio Di Mauro
* @Last Modified time: 2020-05-11 13:28:30
*/
#include "pulp.h"
#define DEBUG
static void spim_wait_tx_done(int periph)
{
#ifdef DEBUG
int periph_id = periph - ARCHI_SPIM_QSPI_ID(0);
printf("periph_id = %d\n", periph_id);
#endif
while (plp_udma_busy(UDMA_SPIM_TX_ADDR(periph - ARCHI_SPIM_UART_ID(0))))
{
}
while(plp_uart_tx_busy(periph - ARCHI_UDMA_UART_ID(0)));
}
static void spim_wait_rx_done(int periph)
{
while (plp_udma_busy(UDMA_UART_RX_ADDR(periph - ARCHI_UDMA_UART_ID(0))))
{
}
}
int qspi_write_nb(int qspi_id, void *buffer, uint32_t size)
{
int periph_id = ARCHI_UDMA_QSPI_ID(qspi_id);
int channel = UDMA_CHANNEL_ID(periph_id) + 1;
unsigned int base = hal_udma_channel_base(channel);
plp_udma_enqueue(base, (int)buffer, size, UDMA_CHANNEL_CFG_EN | UDMA_CHANNEL_CFG_SIZE_8);
//uart_wait_tx_done(periph_id);
return 0;
}