84d798f516
Previously the code had canbus_read() which was called from task context (for admin messages), and canbus_process_data() which was called from irq context (used for data messages). Change that to a single canbus_process_data() function that is called from irq context (used for all messages). This simplifies the low-level hardware specific canbus code and should make it easier to support other hardware implementations. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
31 lines
632 B
C
31 lines
632 B
C
#ifndef __CANBUS_H__
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#define __CANBUS_H__
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#include <stdint.h> // uint32_t
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#define CANBUS_ID_ADMIN 0x3f0
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#define CANBUS_ID_ADMIN_RESP 0x3f1
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#define CANBUS_UUID_LEN 6
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struct canbus_msg {
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uint32_t id;
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uint32_t dlc;
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union {
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uint8_t data[8];
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uint32_t data32[2];
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};
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};
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#define CANMSG_DATA_LEN(msg) ((msg)->dlc > 8 ? 8 : (msg)->dlc)
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// callbacks provided by board specific code
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int canbus_send(struct canbus_msg *msg);
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void canbus_set_filter(uint32_t id);
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// canbus.c
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void canbus_notify_tx(void);
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void canbus_process_data(struct canbus_msg *msg);
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void canbus_set_uuid(void *data);
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#endif // canbus.h
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