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Fix: Pylontech/Pytes CAN driver: user interrupts at level 2

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we are running out of level 1 interrupts on ESP32-S3 boards. for that
reason, until this prooves to be another sort of problem, we allocate
the TWAI's interrupt for the battery CAN implementation at level 2.
This commit is contained in:
Bernhard Kirchen 2024-08-27 21:16:48 +02:00 committed by Bernhard Kirchen
parent 119bd3a41e
commit 9ebbc58930
1 changed files with 9 additions and 0 deletions
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9
src/BatteryCanReceiver.cpp
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@ -26,6 +26,15 @@ bool BatteryCanReceiver::init(bool verboseLogging, char const* providerName)
auto rx = static_cast<gpio_num_t>(pin.battery_rx); auto rx = static_cast<gpio_num_t>(pin.battery_rx);
twai_general_config_t g_config = TWAI_GENERAL_CONFIG_DEFAULT(tx, rx, TWAI_MODE_NORMAL); twai_general_config_t g_config = TWAI_GENERAL_CONFIG_DEFAULT(tx, rx, TWAI_MODE_NORMAL);
// interrupts at level 1 are in high demand, at least on ESP32-S3 boards,
// but only a limited amount can be allocated. failing to allocate an
// interrupt in the TWAI driver will cause a bootloop. we therefore
// register the TWAI driver's interrupt at level 2. level 2 interrupts
// should be available -- we don't really know. we would love to have the
// esp_intr_dump() function, but that's not available yet in our version
// of the underlying esp-idf.
g_config.intr_flags = ESP_INTR_FLAG_LEVEL2;
// Initialize configuration structures using macro initializers // Initialize configuration structures using macro initializers
twai_timing_config_t t_config = TWAI_TIMING_CONFIG_500KBITS(); twai_timing_config_t t_config = TWAI_TIMING_CONFIG_500KBITS();
twai_filter_config_t f_config = TWAI_FILTER_CONFIG_ACCEPT_ALL(); twai_filter_config_t f_config = TWAI_FILTER_CONFIG_ACCEPT_ALL();