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48 lines
1.8 KiB
C
48 lines
1.8 KiB
C
/* pru1_statemachine_arbitration.h: state machine for INTR/DMA arbitration
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Copyright (c) 2018, Joerg Hoppe
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j_hoppe@t-online.de, www.retrocmp.com
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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JOERG HOPPE BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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12-nov-2018 JH entered beta phase
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*/
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#ifndef _PRU1_STATEMACHINE_ARBITRATION_H_
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#define _PRU1_STATEMACHINE_ARBITRATION_H_
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// execution of a state. return : 1, if statemachine stopped
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typedef uint8_t (*sm_arb_state_func_ptr)(void);
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typedef struct {
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sm_arb_state_func_ptr state; // current state as ptr to "state function"
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uint8_t priority_bit ; // single priority bit for this arbitration process
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// one of ARBITRATION_PRIORITY_*
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} statemachine_arbitration_t;
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#ifndef _PRU1_STATEMACHINE_ARBITRATION_C_
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extern statemachine_arbitration_t sm_arb;
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#endif
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void sm_arb_start(uint8_t priority_bit);
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uint8_t sm_arb_state_idle(void) ;
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#endif
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