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Perform input and output in the second PRU so that more space is available in the primary PRU. Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
40 lines
885 B
C
40 lines
885 B
C
#ifndef __PRU_INTERNAL_H
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#define __PRU_INTERNAL_H
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// Local definitions for PRU code
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#include <stdint.h> // uint32_t
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#define IEP_EVENT 7
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#define KICK_ARM_EVENT 16
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#define KICK_PRU0_FROM_ARM_EVENT 17
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#define KICK_PRU0_EVENT 18
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#define KICK_PRU1_EVENT 19
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#define WAKE_PRU0_IRQ 0
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#define WAKE_PRU1_IRQ 1
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#define WAKE_ARM_IRQ 2
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#define R31_IRQ_OFFSET 30
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#define R31_WRITE_IRQ_SELECT (1<<5)
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#define R31_WRITE_IRQ_OFFSET 16
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// Layout of shared memory
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struct shared_mem {
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uint32_t signal;
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uint32_t read_pos, read_count;
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char read_data[512];
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uint32_t send_push_pos, send_pop_pos;
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struct {
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uint32_t count;
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char data[64];
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} send_data[4];
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};
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#define SIGNAL_PRU0_WAITING 0xefefefef
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#define SIGNAL_PRU1_READY 0xabababab
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static struct shared_mem *SHARED_MEM = (void*)0x10000;
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#endif // internal.h
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