[BUG] Fix deadlocks on disconnected secondary half (#17423)
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3 changed files with 38 additions and 11 deletions
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@ -87,10 +87,7 @@ static THD_FUNCTION(Thread1, arg) {
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chRegSetThreadName("blinker");
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while (true) {
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palWaitLineTimeout(SOFT_SERIAL_PIN, TIME_INFINITE);
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split_shared_memory_lock();
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interrupt_handler(NULL);
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split_shared_memory_unlock();
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}
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}
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@ -155,6 +152,7 @@ static void __attribute__((noinline)) serial_write_byte(uint8_t data) {
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// interrupt handle to be used by the slave device
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void interrupt_handler(void *arg) {
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split_shared_memory_lock_autounlock();
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chSysLockFromISR();
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sync_send();
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@ -212,6 +210,8 @@ void interrupt_handler(void *arg) {
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static inline bool initiate_transaction(uint8_t sstd_index) {
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if (sstd_index > NUM_TOTAL_TRANSACTIONS) return false;
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split_shared_memory_lock_autounlock();
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split_transaction_desc_t *trans = &split_transaction_table[sstd_index];
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// TODO: remove extra delay between transactions
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@ -292,8 +292,5 @@ static inline bool initiate_transaction(uint8_t sstd_index) {
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//
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// this code is very time dependent, so we need to disable interrupts
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bool soft_serial_transaction(int sstd_index) {
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split_shared_memory_lock();
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bool result = initiate_transaction((uint8_t)sstd_index);
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split_shared_memory_unlock();
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return result;
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return initiate_transaction((uint8_t)sstd_index);
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}
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