Peter M. Groen / libmodbus

Authored by Stéphane Raimbault 2008-05-18 00:49:18 +0200

1 parent 202231da

Showing 1 changed file with 47 additions and 0 deletions

MIGRATION 0 → 100644

	1	+===================================
	2	+Migration notes from the 1.2 series
	3	+===================================
	4	+
	5	+Init
	6	+====
	7	+
	8	+modbus_init_tcp requires a third new argument, the port number.
	9	+
	10	+modbus_init_tcp(modbus_param_t mb_param, char ip_address, int port)
	11	+
	12	+Set the port to MODBUS_TCP_DEFAULT_PORT to use the default one
	13	+(502). It's convenient to use a port number greater than or equal to
	14	+1024 because it's not necessary to be root to use this port number.
	15	+
	16	+
	17	+Pointers of data
	18	+================
	19	+
	20	+The coil and input status are now stored in an array of type uint8_t
	21	+(in 1.2.X series, array of type int was used). So now, you need to
	22	+pass a pointer of type uint8_t to use read_coil_status(), for example.
	23	+
	24	+The holding and input registers are now stored in an array of type
	25	+uint16_t.
	26	+
	27	+These changes reduce the memory consumption.
	28	+
	29	+
	30	+New functions
	31	+=============
	32	+
	33	+report_slave_id
	34	+
	35	+modbus_set_error_handling
	36	+modbus_mapping_new
	37	+modbus_mapping_free
	38	+modbus_init_listen_tcp
	39	+modbus_listen
	40	+modbus_manage_query
	41	+
	42	+get_slave_query_tcp
	43	+set_bits_from_byte
	44	+set_bits_from_bytes
	45	+get_byte_from_bits
	46	+
	47	+Read modbus.h for more informations.
...	...