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software_spi: set rate limiting ticks from the host

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Signed-off-by: Timofey Titovets <nefelim4ag@gmail.com>
This commit is contained in:
Timofey Titovets
2025-03-13 04:50:46 +01:00
committed by KevinOConnor
parent b826844b34
commit abc76ee963
3 changed files with 48 additions and 25 deletions
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13
klippy/extras/bus.py
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@@ -43,6 +43,7 @@ class MCU_SPI:
cs_active_high=False):
self.mcu = mcu
self.bus = bus
self.speed = speed
# Config SPI object (set all CS pins high before spi_set_bus commands)
self.oid = mcu.create_oid()
if pin is None:
@@ -51,11 +52,17 @@ class MCU_SPI:
mcu.add_config_cmd("config_spi oid=%d pin=%s cs_active_high=%d"
% (self.oid, pin, cs_active_high))
# Generate SPI bus config message
self.config_fmt_ticks = None
if sw_pins is not None:
self.config_fmt = (
"spi_set_software_bus oid=%d"
" miso_pin=%s mosi_pin=%s sclk_pin=%s mode=%d rate=%d"
% (self.oid, sw_pins[0], sw_pins[1], sw_pins[2], mode, speed))
self.config_fmt_ticks = (
"spi_set_sw_bus oid=%d"
" miso_pin=%s mosi_pin=%s sclk_pin=%s mode=%d pulse_ticks=%%d"
% (self.oid, sw_pins[0], sw_pins[1],
sw_pins[2], mode))
else:
self.config_fmt = (
"spi_set_bus oid=%d spi_bus=%%s mode=%d rate=%d"
@@ -78,6 +85,12 @@ class MCU_SPI:
if '%' in self.config_fmt:
bus = resolve_bus_name(self.mcu, "spi_bus", self.bus)
self.config_fmt = self.config_fmt % (bus,)
if self.config_fmt_ticks:
if self.mcu.try_lookup_command("spi_set_sw_bus oid=%c miso_pin=%u "
"mosi_pin=%u sclk_pin=%u "
"mode=%u pulse_ticks=%u"):
pulse_ticks = self.mcu.seconds_to_clock(1./self.speed)
self.config_fmt = self.config_fmt_ticks % (pulse_ticks,)
self.mcu.add_config_cmd(self.config_fmt)
self.spi_send_cmd = self.mcu.lookup_command(
"spi_send oid=%c data=%*s", cq=self.cmd_queue)