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/* Modbus definition file for a 4-channel relay board found on eBay */
/*
The format of the channel descriptors is:
{TYPE, FUNC, ADDR, COUNT, pin_name}
TYPE is one of HAL_BIT, HAL_FLOAT, HAL_S32, HAL_U32
FUNC = 1, 2, 3, 4, 5, 6, 15, 16 - Modbus commands
COUNT = number of coils/registers to read
*/
#define MAX_MSG_LEN 16 // may be increased if necessary to max 251
static const hm2_modbus_chan_descriptor_t channels[] = {
/* {TYPE, FUNC, ADDR, COUNT, pin_name} */
{HAL_BIT, 1, 0x0000, 8, "state"},
{HAL_BIT, 2, 0x0000, 8, "input"},
{HAL_BIT, 5, 0x0000, 1, "relay-0"},
{HAL_BIT, 5, 0x0001, 1, "relay-1"},
{HAL_BIT, 5, 0x0002, 1, "relay-2"},
{HAL_BIT, 5, 0x0003, 1, "relay-3"},
};
/* Optionally #define DEBUG to aid with troubleshooting.
Use 3 to see a lot of information about the modbus
internal workings. 1 is default (errors only) */
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