mirror of https://github.com/efabless/caravel.git
68 lines
1.7 KiB
C
68 lines
1.7 KiB
C
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/*
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* SPDX-FileCopyrightText: 2020 Efabless Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <defs.h>
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// --------------------------------------------------------
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/*
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* Management SoC GPIO Pin Test
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* Tests writing to the GPIO pin.
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*/
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void main()
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{
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int temp_in;
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reg_wb_enable =1; // for enable writing to reg_debug_1 and reg_debug_2
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reg_debug_1 = 0x0;
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reg_debug_2 = 0x0;
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reg_gpio_mode1 = 1;
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reg_gpio_mode0 = 0; // for full swing
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reg_gpio_ien = 1;
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reg_gpio_oe = 1;
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reg_debug_1 = 10; // wait for 10 blinks
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for (int i = 0; i < 10; i++) {
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while(reg_gpio_in == 0);
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reg_debug_2 = 0XAA; // 1 is recieved
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while(reg_gpio_in == 1);
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reg_debug_2 = 0XBB; // 0 is recieved
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}
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reg_debug_2 = 0x1B;
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reg_debug_1 = 20;
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for (int i = 0; i < 20; i++) {
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while(reg_gpio_in == 0);
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reg_debug_2 = 0XAA; // 1 is recieved
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while(reg_gpio_in == 1);
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reg_debug_2 = 0XBB; // 0 is recieved
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}
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reg_debug_2 = 0x2B;
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temp_in = reg_gpio_in;
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reg_debug_1 = 0;
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for (int i =0; i<50;i++){ // timeout
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if (temp_in != reg_gpio_in)
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reg_debug_2 = 0xEE; //finish test
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}
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reg_debug_2 = 0xFF; //finish test
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}
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