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serial-dmm: bm86x: increase packet request frequency 

Request packets from the Brymen BM86x meter much faster. The previous
implementation in the separate driver used to immediately send another
request when a measurement arrived, with a 10ms granularity in the poll
routine, and a 500ms timeout between requests.

Considering the meter's update rate, stick with the 500ms timeout, but
increase the maximum request rate to 10 per second, with a minimum of 2
per second. This receives measurement data at the meter's capability
(compare DC and AC modes, seems to automatically adjust to the internal
operation, and match the display update rate).
This commit is contained in:
Gerhard Sittig 2019-06-09 17:03:31 +02:00
parent 0759e2f55b
commit b800667daf
1 changed files with 1 additions and 1 deletions
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2
src/hardware/serial-dmm/api.c
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@ -259,7 +259,7 @@ SR_REGISTER_DEV_DRIVER_LIST(serial_dmm_drivers,
/* bm86x based meters {{{ */
DMM_CONN(
"brymen-bm86x", brymen_bm86x, "Brymen", "BM86x",
"hid/bu86x", NULL, BRYMEN_BM86X_PACKET_SIZE, 1500, 500,
"hid/bu86x", NULL, BRYMEN_BM86X_PACKET_SIZE, 500, 100,
sr_brymen_bm86x_packet_request,
sr_brymen_bm86x_packet_valid, sr_brymen_bm86x_parse,
NULL