diff options
author | Jonathan McCrohan <jmccrohan@gmail.com> | 2011-10-12 21:50:48 +0100 |
---|---|---|
committer | Jonathan McCrohan <jmccrohan@gmail.com> | 2011-10-12 21:50:48 +0100 |
commit | 6cfbf2dee130cc36a72d57adea0e9c04bb31f620 (patch) | |
tree | 638bcaf4c63e3d3be17e0f5e7d74639394d15702 /verteco | |
download | verteco-6cfbf2dee130cc36a72d57adea0e9c04bb31f620.tar.gz |
Initial commit
Diffstat (limited to '')
-rwxr-xr-x | verteco | bin | 0 -> 9589 bytes | |||
-rw-r--r-- | verteco.c | 63 |
2 files changed, 63 insertions, 0 deletions
Binary files differ diff --git a/verteco.c b/verteco.c new file mode 100644 index 0000000..a039952 --- /dev/null +++ b/verteco.c @@ -0,0 +1,63 @@ +#include <stdio.h> +#include <unistd.h> +#include <stdlib.h> +#include <errno.h> + +#include <modbus.h> + +#define SLAVE_ID 1 +#define START_ADDRESS 0 +#define NUMBER_REGISTERS 14 + +#define DEBUG_MODE 0 + +int main(int argc, char *argv[]) +{ + +if ( argc != 2 ){ + return -1; +} + + +modbus_t *ctx; +uint16_t tab_reg[64]; +int rc; +int i; + +ctx = modbus_new_rtu(argv[1], 19200, 'E', 8, 1); +modbus_set_slave(ctx, SLAVE_ID); + +modbus_set_debug(ctx, DEBUG_MODE); + +if (ctx == NULL) { + fprintf(stderr, "Unable to create the libmodbus context\n"); + return -1; +} + + + +if (modbus_connect(ctx) == -1) { + fprintf(stderr, "Connection failed: %s\n", modbus_strerror(errno)); + modbus_free(ctx); + return -1; +} + +rc = modbus_read_input_registers(ctx, START_ADDRESS, NUMBER_REGISTERS, tab_reg); + + +if (rc == -1) { + fprintf(stderr, "ERROR: %s\n", modbus_strerror(errno)); + return -1; +} + + +for (i=0; i < rc; i=i+2) { + printf("reg[%d]=%d\n", i, tab_reg[i]+tab_reg[i+1]); +} + + +modbus_close(ctx); +modbus_free(ctx); + + return 0; +} |