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authorJoel Challis <git@zvecr.com>2020-05-21 18:00:21 +0100
committerFlorian Didron <fdidron@users.noreply.github.com>2020-06-12 17:00:27 +0900
commit2cbf1f08fde8c147510cf3253c66465b8f94d35f (patch)
tree2389464e59fd170c806bd9a238dd7c5a77c8684b /drivers/chibios/serial.h
parentce68912cf2550bc1d1ba5a80d151bf98ea6c9be1 (diff)
ARM split - Add uart half duplex transport support (#7987)
* ARM split - Add uart half duplex transport support * Fix for f103 * initial full duplex pass * partially remove full duplex * Correct speeds within driver docs Co-authored-by: Nick Brassel <nick@tzarc.org> Co-authored-by: Nick Brassel <nick@tzarc.org> format code according to conventions [skip ci]
Diffstat (limited to 'drivers/chibios/serial.h')
-rw-r--r--drivers/chibios/serial.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/drivers/chibios/serial.h b/drivers/chibios/serial.h
new file mode 100644
index 0000000000..0c1857d52e
--- /dev/null
+++ b/drivers/chibios/serial.h
@@ -0,0 +1,62 @@
+#pragma once
+
+#include <stdbool.h>
+
+// /////////////////////////////////////////////////////////////////
+// Need Soft Serial defines in config.h
+// /////////////////////////////////////////////////////////////////
+// ex.
+// #define SOFT_SERIAL_PIN ?? // ?? = D0,D1,D2,D3,E6
+// OPTIONAL: #define SELECT_SOFT_SERIAL_SPEED ? // ? = 1,2,3,4,5
+// // 1: about 137kbps (default)
+// // 2: about 75kbps
+// // 3: about 39kbps
+// // 4: about 26kbps
+// // 5: about 20kbps
+//
+// //// USE simple API (using signle-type transaction function)
+// /* nothing */
+// //// USE flexible API (using multi-type transaction function)
+// #define SERIAL_USE_MULTI_TRANSACTION
+//
+// /////////////////////////////////////////////////////////////////
+
+// Soft Serial Transaction Descriptor
+typedef struct _SSTD_t {
+ uint8_t *status;
+ uint8_t initiator2target_buffer_size;
+ uint8_t *initiator2target_buffer;
+ uint8_t target2initiator_buffer_size;
+ uint8_t *target2initiator_buffer;
+} SSTD_t;
+#define TID_LIMIT(table) (sizeof(table) / sizeof(SSTD_t))
+
+// initiator is transaction start side
+void soft_serial_initiator_init(SSTD_t *sstd_table, int sstd_table_size);
+// target is interrupt accept side
+void soft_serial_target_init(SSTD_t *sstd_table, int sstd_table_size);
+
+// initiator result
+#define TRANSACTION_END 0
+#define TRANSACTION_NO_RESPONSE 0x1
+#define TRANSACTION_DATA_ERROR 0x2
+#define TRANSACTION_TYPE_ERROR 0x4
+#ifndef SERIAL_USE_MULTI_TRANSACTION
+int soft_serial_transaction(void);
+#else
+int soft_serial_transaction(int sstd_index);
+#endif
+
+// target status
+// *SSTD_t.status has
+// initiator:
+// TRANSACTION_END
+// or TRANSACTION_NO_RESPONSE
+// or TRANSACTION_DATA_ERROR
+// target:
+// TRANSACTION_DATA_ERROR
+// or TRANSACTION_ACCEPTED
+#define TRANSACTION_ACCEPTED 0x8
+#ifdef SERIAL_USE_MULTI_TRANSACTION
+int soft_serial_get_and_clean_status(int sstd_index);
+#endif