v1.0.0

* Initial release for SX1302 CoreCell Reference Design.

tools/payload_tools/payload_gen.c

@@ -0,0 +1,124 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+
+#include "tinymt32.h"
+
+/* -------------------------------------------------------------------------- */
+/* --- SUBFUNCTIONS DECLARATION --------------------------------------------- */
+
+static void usage(void);
+void remove_spaces(char *str);
+
+/* -------------------------------------------------------------------------- */
+/* --- MAIN FUNCTION -------------------------------------------------------- */
+
+int main(int argc, char ** argv)
+{
+    int j;
+    uint8_t dev_id[4];
+    uint8_t payload[255];
+    uint8_t payload_size;
+    unsigned int packet_cnt;
+    tinymt32_t tinymt;
+    char hexstr[32];
+
+    if (argc < 4) {
+        usage();
+        return -1;
+    }
+
+    /* Get dev_id hex string from command line */
+    memcpy(hexstr, argv[1], strlen(argv[1]));
+    hexstr[strlen(argv[1])] = '\0';
+
+    /* Remove spaces from the string if any */
+    remove_spaces(hexstr);
+    hexstr[strlen(hexstr)] = '\0';
+    printf("Dev_id: %s\n", hexstr);
+
+    /* Convert hex string to byte array */
+    payload_size = strlen(hexstr) / 2;
+    for (j = 0; j < 4; j++) {
+        sscanf(hexstr + 2*j, "%02hhx", &dev_id[j]);
+    }
+
+    /* Get packet count from which generate the random payload */
+    packet_cnt = atoi(argv[2]);
+
+    /* Get packet payload size */
+    payload_size = (uint8_t)atoi(argv[3]);
+
+    /* Initialize the pseudo-random generator */
+    tinymt.mat1 = 0x8f7011ee;
+    tinymt.mat2 = 0xfc78ff1f;
+    tinymt.tmat = 0x3793fdff;
+    tinymt32_init(&tinymt, packet_cnt);
+
+    /* Construct packet */
+    payload[0] = dev_id[0];
+    payload[1] = dev_id[1];
+    payload[2] = dev_id[2];
+    payload[3] = dev_id[3];
+    payload[4] = (uint8_t)(packet_cnt >> 24);
+    payload[5] = (uint8_t)(packet_cnt >> 16);
+    payload[6] = (uint8_t)(packet_cnt >> 8);
+    payload[7] = (uint8_t)(packet_cnt >> 0);
+    for (j = 8; j < payload_size; j++) {
+        payload[j] = (uint8_t)tinymt32_generate_uint32(&tinymt);
+    }
+    for (j = 0; j < payload_size; j++) {
+        printf("%02X ", payload[j]);
+    }
+    printf("\n");
+
+#if 0
+    for (packet_cnt = 0; packet_cnt < 10; packet_cnt++) {
+        tinymt32_init(&tinymt, (int)packet_cnt);
+        payload[0] = 0xCA;
+        payload[1] = 0xFE;
+        payload[2] = 0x12;
+        payload[3] = 0x34;
+        payload[4] = (uint8_t)(packet_cnt >> 24);
+        payload[5] = (uint8_t)(packet_cnt >> 16);
+        payload[6] = (uint8_t)(packet_cnt >> 8);
+        payload[7] = (uint8_t)(packet_cnt >> 0);
+        for (j = 8; j < 16; j++) {
+            payload[j] = (uint8_t)tinymt32_generate_uint32(&tinymt);
+        }
+        for (j = 0; j < 16; j++) {
+            printf("%02X ", payload[j]);
+        }
+        printf("\n");
+    }
+#endif
+
+    return 0;
+}
+
+/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
+
+void usage(void) {
+    printf("Missing parameters: ./payload_gen dev_id pkt_cnt pkt_size\n");
+    printf("       dev_id: hex string for 4-bytes dev_id\n");
+    printf("       pkt_cnt: unsigned int used to initialize the pseudo-random generator\n");
+    printf("       pkt_size: paylaod size in bytes [0..255]\n");
+}
+
+/* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
+
+void remove_spaces(char *str)
+{
+    /* To keep track of non-space character count */
+    int count = 0;
+
+    /* Traverse the given string. If current character
+        is not space, then place it at index 'count++' */
+    for (int i = 0; str[i]; i++) {
+        if (str[i] != ' ') {
+            str[count++] = str[i]; /* here count is incremented */
+        }
+    }
+    str[count] = '\0';
+}