mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-16 00:00:02 +01:00
100 lines
2.5 KiB
C
100 lines
2.5 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 <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <villas/fpga/dma.h>
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int main(int argc, char *argv[]) {
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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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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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