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SPIMasterTester.h
1 /*
2  * Copyright (c) 2019, Arm Limited and affiliates.
3  * SPDX-License-Identifier: Apache-2.0
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 #ifndef SPI_MASTER_TESTER_H
19 #define SPI_MASTER_TESTER_H
20 
21 #include "SPITester.h"
22 
23 class SPIMasterTester: public SPITester {
24 public:
25 
26  SPIMasterTester(const PinList *form_factor, const PinList *exclude_pins)
27  : SPITester(form_factor, exclude_pins)
28  {
29 
30  }
31 
32  /**
33  * Read the number of transfers which have occurred
34  *
35  * @return The number of SPI transfers that have completed since
36  * spi was reset.
37  */
38  uint16_t get_transfer_count();
39 
40  /**
41  * Read a checksum of data send to the tester
42  *
43  * @return The sum of all bytes sent to the tester since reset.
44  */
45  uint32_t get_receive_checksum();
46 
47  /**
48  * Set the clock mode of the spi_slave module.
49  *
50  * @param mode Spi clock mode
51  */
52  void set_mode(SpiMode mode);
53 
54  /**
55  * Set bit order durring transmission of the spi_slave module.
56  *
57  * @param mode Spi clock mode
58  */
59  void set_bit_order(SpiBitOrder bit_order);
60 
61  /**
62  * Set symbol size used durring transmission of the spi_slave module.
63  *
64  * @param mode Spi clock mode
65  */
66  void set_sym_size(uint32_t sym_size);
67 
68  /**
69  * Set full-duplex/half-duplex transmission mode of the spi_slave module.
70  *
71  * @param duplex duplex mode used for the transmission
72  */
73  void set_duplex_mode(SpiDuplex duplex);
74 
75  /**
76  * Set tx/rx symbol count.
77  *
78  * @tx_cnt TX symbol count
79  * @rx_cnt RX symbol count
80  *
81  * @note Required only in Half-Duplex mode.
82  */
83  void set_hd_tx_rx_cnt(uint16_t tx_cnt, uint16_t rx_cnt);
84 
85  /**
86  * Get nano seconds between chip select assertion and the first spi clock edge.
87  *
88  * @return nano seconds between chip select assertion and the first spi clock edge.
89  *
90  * @note Number of nano seconds is calculated based of number of counted clk changes and
91  * clk frequency (100 MHz => 1 clk tick corresponds to 10 ns).
92  * Accuracy of the returned value is +/- 10 ns.
93  */
94  uint32_t get_cs_to_first_clk_edge_ns();
95 
96  /**
97  * Get nano seconds between last spi clock edge and chip select de-assertion.
98  *
99  * @return nano seconds between last spi clock edge and chip select de-assertion.
100  *
101  * @note Number of nano seconds is calculated based of number of counted clk changes and
102  * clk frequency (100 MHz => 1 clk tick corresponds to 10 ns).
103  * Accuracy of the returned value is +/- 10 ns.
104  */
105  uint32_t get_last_clk_edge_to_cs_ns();
106 
107  /**
108  * Get SCLK and SIN states on transmission start and stop.
109  *
110  * @return latched SCLK and SIN states on transmission start and stop.
111  *
112  * @note Stats are encoded as fallows (bit 0 - LSB):
113  * - bit 0: start SCLK
114  * - bit 1: start SIN
115  * - bit 2: stop SCLK,
116  * - bit 3: stop SIN,
117  * - other: unused
118  */
119  uint8_t get_start_stop_stats();
120 
121 };
122 
123 #endif
void set_mode(SpiMode mode)
Set the clock mode of the spi_slave module.
void set_sym_size(uint32_t sym_size)
Set symbol size used durring transmission of the spi_slave module.
uint8_t get_start_stop_stats()
Get SCLK and SIN states on transmission start and stop.
void set_bit_order(SpiBitOrder bit_order)
Set bit order durring transmission of the spi_slave module.
void set_duplex_mode(SpiDuplex duplex)
Set full-duplex/half-duplex transmission mode of the spi_slave module.
uint16_t get_transfer_count()
Read the number of transfers which have occurred.
Definition: pinmap.h:37
uint32_t get_receive_checksum()
Read a checksum of data send to the tester.
void set_hd_tx_rx_cnt(uint16_t tx_cnt, uint16_t rx_cnt)
Set tx/rx symbol count.
uint32_t get_last_clk_edge_to_cs_ns()
Get nano seconds between last spi clock edge and chip select de-assertion.
uint32_t get_cs_to_first_clk_edge_ns()
Get nano seconds between chip select assertion and the first spi clock edge.
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