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-rw-r--r--klippy/extras/display.py10
1 files changed, 6 insertions, 4 deletions
diff --git a/klippy/extras/display.py b/klippy/extras/display.py
index e68c3db7..00a4777d 100644
--- a/klippy/extras/display.py
+++ b/klippy/extras/display.py
@@ -161,7 +161,9 @@ HD44780_chars = [
# ST7920 (128x64 graphics) lcd chip
######################################################################
-ST7920_DELAY = .000020 # Spec says 72us, but faster is possible in practice
+# Spec says 72us, but faster is possible in practice
+ST7920_CMD_DELAY = .000020
+ST7920_SYNC_DELAY = .000045
class ST7920:
char_right_arrow = '\x1a'
@@ -182,7 +184,6 @@ class ST7920:
self.mcu = mcu
self.oid = self.mcu.create_oid()
self.mcu.add_config_object(self)
- self.chip_delay = config.getfloat('chip_delay', ST7920_DELAY, minval=0.)
self.send_data_cmd = self.send_cmds_cmd = None
self.is_extended = False
# framebuffers
@@ -195,9 +196,10 @@ class ST7920:
def build_config(self):
self.mcu.add_config_cmd(
"config_st7920 oid=%u cs_pin=%s sclk_pin=%s sid_pin=%s"
- " delay_ticks=%d" % (
+ " sync_delay_ticks=%d cmd_delay_ticks=%d" % (
self.oid, self.pins[0], self.pins[1], self.pins[2],
- self.mcu.seconds_to_clock(self.chip_delay)))
+ self.mcu.seconds_to_clock(ST7920_SYNC_DELAY),
+ self.mcu.seconds_to_clock(ST7920_CMD_DELAY)))
cmd_queue = self.mcu.alloc_command_queue()
self.send_cmds_cmd = self.mcu.lookup_command(
"st7920_send_cmds oid=%c cmds=%*s", cq=cmd_queue)