pinetime/wasp-os
1
0
Fork 0
Code Activity

Docs and constants for hrs3300.set_drive()

Browse source 
Signed-off-by: Francesco Gazzetta <fgaz@fgaz.me>
This commit is contained in:
Francesco Gazzetta 2022-05-28 16:14:36 +02:00
parent 0cca03a94b
commit 4d4c83e851
1 changed files with 14 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
wasp/drivers/hrs3300.py
View file

@ -14,10 +14,12 @@ _ID = const(0x00)
_ENABLE = const(0x01)
_ENABLE_HEN = const(0x80)
_ENABLE_HWT = const(0x70)
_ENABLE_PDRIVE1 = const(0x08)
_C1DATAM = const(0x08)
_C0DATAM = const(0x09)
_C0DATAH = const(0x0a)
_PDRIVER = const(0x0c)
_PDRIVER_PDRIVE0 = const(0x40)
_C1DATAH = const(0x0d)
_C1DATAL = const(0x0e)
_C0DATAL = const(0x0f)
@ -89,11 +91,21 @@ class HRS3300:
self.write_reg(_HGAIN, hgain << 2)
def set_drive(self, drive):
"""
Set LED drive current
Parameters:
drive (int) LED drive current
0 = 12.5 mA
1 = 20 mA
2 = 30 mA
3 = 40 mA
"""
en = self.read_reg(_ENABLE)
pd = self.read_reg(_PDRIVER)
en = (en & 0xf7) | ((drive & 2) << 2)
pd = (pd & 0xbf) | ((drive & 1) << 6)
en = (en & ~_ENABLE_PDRIVE1 ) | ((drive & 2) << 2)
pd = (pd & ~_PDRIVER_PDRIVE0) | ((drive & 1) << 6)
self.write_reg(_ENABLE, en)
self.write_reg(_PDRIVER, pd)