SPISlaveTester.cpp

00001 /*
00002  * Copyright (c) 2019, Arm Limited and affiliates.
00003  * SPDX-License-Identifier: Apache-2.0
00004  *
00005  * Licensed under the Apache License, Version 2.0 (the "License");
00006  * you may not use this file except in compliance with the License.
00007  * You may obtain a copy of the License at
00008  *
00009  * http://www.apache.org/licenses/LICENSE-2.0
00010  *
00011  * Unless required by applicable law or agreed to in writing, software
00012  * distributed under the License is distributed on an "AS IS" BASIS,
00013  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014  * See the License for the specific language governing permissions and
00015  * limitations under the License.
00016  */
00017 
00018 #include "SPISlaveTester.h"
00019 #include "fpga_config.h"
00020 
00021 uint16_t SPISlaveTester::get_transfer_count()
00022 {
00023     return SPITester::get_transfer_count(TESTER_SPI_SLAVE_TRANSFERS, TESTER_SPI_SLAVE_TRANSFERS_SIZE);
00024 }
00025 
00026 uint32_t SPISlaveTester::get_receive_checksum()
00027 {
00028     return SPITester::get_receive_checksum(TESTER_SPI_SLAVE_TO_MASTER_CHECKSUM, TESTER_SPI_SLAVE_TO_MASTER_CHECKSUM_SIZE);
00029 }
00030 
00031 void SPISlaveTester::set_mode(SPITester::SpiMode mode)
00032 {
00033     SPITester::set_mode(mode, TESTER_SPI_SLAVE_CTRL, TESTER_SPI_SLAVE_CTRL_SIZE, TESTER_SPI_SLAVE_CLK_MODE_OFFSET, TESTER_SPI_SLAVE_CLK_MODE_SIZE);
00034 }
00035 
00036 void SPISlaveTester::set_bit_order(SPITester::SpiBitOrder bit_order)
00037 {
00038     SPITester::set_bit_order(bit_order, TESTER_SPI_SLAVE_CTRL, TESTER_SPI_SLAVE_CTRL_SIZE, TESTER_SPI_SLAVE_BIT_ORDER_OFFSET, TESTER_SPI_SLAVE_BIT_ORDER_SIZE);
00039 }
00040 
00041 void SPISlaveTester::set_sym_size(uint32_t sym_size)
00042 {
00043     SPITester::set_sym_size(sym_size, TESTER_SPI_SLAVE_CTRL, TESTER_SPI_SLAVE_CTRL_SIZE, TESTER_SPI_SLAVE_SYM_SIZE_OFFSET, TESTER_SPI_SLAVE_SYM_SIZE_SIZE);
00044 }
00045 
00046 void SPISlaveTester::set_duplex_mode(SPITester::SpiDuplex duplex)
00047 {
00048     SPITester::set_duplex_mode(duplex, TESTER_SPI_SLAVE_CTRL, TESTER_SPI_SLAVE_CTRL_SIZE, TESTER_SPI_SLAVE_DUPLEX_OFFSET, TESTER_SPI_SLAVE_DUPLEX_SIZE);
00049 }
00050 
00051 void SPISlaveTester::set_hd_tx_rx_cnt(uint16_t tx_cnt, uint16_t rx_cnt)
00052 {
00053     SPITester::set_hd_tx_rx_cnt(tx_cnt, rx_cnt, TESTER_SPI_SLAVE_HD_RX_CNT, TESTER_SPI_SLAVE_HD_RX_CNT_SIZE, TESTER_SPI_SLAVE_HD_TX_CNT, TESTER_SPI_SLAVE_HD_TX_CNT_SIZE);
00054 }
00055 
00056 void SPISlaveTester::set_spi_master_freq(uint16_t clk_div)
00057 {
00058     write(TESTER_SPI_SLAVE_CLK_DIV, (uint8_t *)&clk_div, TESTER_SPI_SLAVE_CLK_DIV_SIZE);
00059 }
00060 
00061 void SPISlaveTester::set_num_of_symbols(uint16_t num_of_sym)
00062 {
00063     write(TESTER_SPI_SLAVE_NUM_OF_SYMBOLS, (uint8_t *)&num_of_sym, TESTER_SPI_SLAVE_NUM_OF_SYMBOLS_SIZE);
00064 }
00065 
00066 void SPISlaveTester::set_start_delay_us(uint8_t start_delay_us)
00067 {
00068     write(TESTER_SPI_SLAVE_START_DELAY_US, (uint8_t *)&start_delay_us, TESTER_SPI_SLAVE_START_DELAY_US_SIZE);
00069 }
00070 
00071 void SPISlaveTester::set_sym_delay_ns(uint16_t sym_delay_ns)
00072 {
00073     const uint16_t sym_delay_ticks = (sym_delay_ns + 9) / 10; // round up
00074     write(TESTER_SPI_SLAVE_SYM_DELAY_TICKS, (uint8_t *)&sym_delay_ticks, TESTER_SPI_SLAVE_SYM_DELAY_TICKS_SIZE);
00075 }
00076 
00077 void SPISlaveTester::start_transfer()
00078 {
00079     uint32_t spi_ctrl = 0;
00080     read(TESTER_SPI_SLAVE_CTRL, (uint8_t *)&spi_ctrl, TESTER_SPI_SLAVE_CTRL_SIZE);
00081     spi_ctrl &= ~(((1  <<  TESTER_SPI_SLAVE_START_REQUEST_SIZE) - 1) << TESTER_SPI_SLAVE_START_REQUEST_OFFSET);
00082     spi_ctrl |= (1  <<  TESTER_SPI_SLAVE_START_REQUEST_OFFSET);
00083     write(TESTER_SPI_SLAVE_CTRL, (uint8_t *)&spi_ctrl, TESTER_SPI_SLAVE_CTRL_SIZE);
00084 }