forked from Mirror/GodMode9
9ecb90a2ba
- completely moved MCU interrupt handling outside of the critical section - refactored a bit of the PXI code and command names - merge the I2C read and write cmds to be one - remove SET_VMODE cmd, now it's always initialized to BGR565 on boot and to RGB565 on firmlaunch - atomic-ize more stuff
55 lines
1.5 KiB
C
Executable File
55 lines
1.5 KiB
C
Executable File
/*
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* This file is part of GodMode9
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* Copyright (C) 2019 Wolfvak
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <arm.h>
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#define I2C_SHARED_BUFSZ 1024
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#define SPI_SHARED_BUFSZ 1024
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typedef struct {
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union {
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struct { u32 keys, touch; };
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u64 full;
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} hidState;
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u8 i2cBuffer[I2C_SHARED_BUFSZ];
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u32 spiBuffer[SPI_SHARED_BUFSZ/4];
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} __attribute__((packed, aligned(8))) SystemSHMEM;
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#ifdef ARM9
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#include <pxi.h>
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extern SystemSHMEM *shmemBasePtr;
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static inline SystemSHMEM *ARM_GetSHMEM(void)
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{
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// shared memory contents are extremely likely to change
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// insert a compiler barrier to force the compiler not to assume
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// memory values will remain constant in between calls to getSHMEM
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asm_v("":::"memory", "cc");
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return shmemBasePtr;
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}
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static inline void ARM_InitSHMEM(void)
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{
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shmemBasePtr = (SystemSHMEM*)PXI_DoCMD(PXICMD_GET_SHMEM_ADDRESS, NULL, 0);
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}
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#endif
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