mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-30 00:00:11 +01:00
157d5b21d7
This edits the headers in every file so the copyright notice mentions RWTH Aachen University. We also update some copyright years and fix various comments so the header is the same across all of VILLASframework. * Harmonize comment and code-style Signed-off-by: Steffen Vogel <steffen.vogel@opal-rt.com> * Harmonize comment and code-style Signed-off-by: Steffen Vogel <steffen.vogel@opal-rt.com> --------- Signed-off-by: Steffen Vogel <steffen.vogel@opal-rt.com>
103 lines
2.4 KiB
C
103 lines
2.4 KiB
C
/* Testing the C bindings for the VILLASfpga DMA interface.
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*
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* Author: Niklas Eiling <niklas.eiling@eonerc.rwth-aachen.de>
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* SPDX-FileCopyrightText: 2023 Niklas Eiling <niklas.eiling@eonerc.rwth-aachen.de>
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <villas/fpga/dma.h>
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int main(int argc, char *argv[])
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{
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int ret;
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villasfpga_handle vh;
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villasfpga_memory mem1, mem2;
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void *mem1ptr, *mem2ptr;
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char line[1024];
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float f;
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size_t size;
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if (argv == NULL) {
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return 1;
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}
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if (argc != 2 || argv[1] == NULL) {
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fprintf(stderr, "Usage: %s <config file>\n", argv[0]);
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}
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if ((vh = villasfpga_init(argv[1])) == NULL) {
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fprintf(stderr, "Failed to initialize FPGA\n");
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ret = 1;
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goto out;
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}
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if (villasfpga_alloc(vh, &mem1, 0x200 * sizeof(uint32_t)) != 0) {
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fprintf(stderr, "Failed to allocate DMA memory 1\n");
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ret = 1;
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goto out;
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}
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if (villasfpga_alloc(vh, &mem2, 0x200 * sizeof(uint32_t)) != 0) {
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fprintf(stderr, "Failed to allocate DMA memory 2\n");
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ret = 1;
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goto out;
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}
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if ((mem1ptr = villasfpga_get_ptr(mem1)) == NULL) {
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fprintf(stderr, "Failed to get pointer to DMA memory 1\n");
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ret = 1;
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goto out;
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}
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if ((mem2ptr = villasfpga_get_ptr(mem2)) == NULL) {
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fprintf(stderr, "Failed to get pointer to DMA memory 2\n");
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ret = 1;
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goto out;
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}
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printf("DMA memory 1: %p, DMA memory 2: %p\n", mem1ptr, mem2ptr);
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while (1) {
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// Setup read transfer
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if ((ret = villasfpga_read(vh, mem1, 0x200 * sizeof(uint32_t))) != 0) {
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fprintf(stderr, "Failed to initiate read transfer\n");
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ret = 1;
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goto out;
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}
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printf("Enter a float:\n");
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if ((ret = scanf("%f", (float*)mem2ptr)) != 1) {
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fprintf(stderr, "Failed to parse input: sscanf returned %d\n", ret);
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ret = 1;
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goto out;
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}
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printf("sending %f (%zu bytes)\n", ((float*)mem2ptr)[0], sizeof(float));
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// Initiate write transfer
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if ((ret = villasfpga_write(vh, mem2, sizeof(float))) != 0) {
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fprintf(stderr, "Failed to initiate write transfer\n");
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ret = 1;
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goto out;
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}
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if ((ret = villasfpga_write_complete(vh, &size)) != 0) {
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fprintf(stderr, "Failed to write complete\n");
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ret = 1;
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goto out;
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}
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if ((ret = villasfpga_read_complete(vh, &size)) != 0) {
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fprintf(stderr, "Failed to write complete\n");
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ret = 1;
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goto out;
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}
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printf("Read %f (%zu bytes)\n", ((float*)mem1ptr)[0], size);
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}
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ret = 0;
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out:
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return ret;
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}
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