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rp2: Add MSC support. #7402
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Original file line number | Diff line number | Diff line change |
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@@ -105,6 +105,7 @@ set(MICROPY_SOURCE_PORT | |
rp2_pio.c | ||
tusb_port.c | ||
uart.c | ||
msc_disk.c | ||
) | ||
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set(MICROPY_SOURCE_QSTR | ||
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@@ -1,3 +1,6 @@ | ||
// Board and hardware specific configuration | ||
#define MICROPY_HW_BOARD_NAME "Raspberry Pi Pico" | ||
#define MICROPY_HW_FLASH_STORAGE_BYTES (1408 * 1024) | ||
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// Enable USB Mass Storage with FatFS filesystem. | ||
//#define MICROPY_HW_USB_MSC (1) |
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Original file line number | Diff line number | Diff line change |
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@@ -0,0 +1,138 @@ | ||
/* | ||
* The MIT License (MIT) | ||
* | ||
* Copyright (c) 2020-2021 Damien P. George | ||
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* | ||
* Permission is hereby granted, free of charge, to any person obtaining a copy | ||
* of this software and associated documentation files (the "Software"), to deal | ||
* in the Software without restriction, including without limitation the rights | ||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
* copies of the Software, and to permit persons to whom the Software is | ||
* furnished to do so, subject to the following conditions: | ||
* | ||
* The above copyright notice and this permission notice shall be included in | ||
* all copies or substantial portions of the Software. | ||
* | ||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | ||
* THE SOFTWARE. | ||
* | ||
*/ | ||
#include "tusb.h" | ||
#if CFG_TUD_MSC | ||
#include "mpconfigboard.h" | ||
#include "hardware/flash.h" | ||
#include "hardware/sync.h" | ||
#include "pico/stdlib.h" | ||
#include "py/mphal.h" | ||
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// This implementation does Not support Flash sector caching. | ||
#if MICROPY_FATFS_MAX_SS != FLASH_SECTOR_SIZE | ||
#error MICROPY_FATFS_MAX_SS must be the same size as FLASH_SECTOR_SIZE | ||
#endif | ||
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#define BLOCK_SIZE (FLASH_SECTOR_SIZE) | ||
#define BLOCK_COUNT (MICROPY_HW_FLASH_STORAGE_BYTES / BLOCK_SIZE) | ||
#define FLASH_BASE_ADDR (PICO_FLASH_SIZE_BYTES - MICROPY_HW_FLASH_STORAGE_BYTES) | ||
#define FLASH_MMAP_ADDR (XIP_BASE + FLASH_BASE_ADDR) | ||
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static bool ejected = false; | ||
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bool tud_msc_device_ejected() { | ||
return ejected; | ||
} | ||
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MP_WEAK int tud_msc_device_ejected_cb(bool ejected) { | ||
(void)ejected; | ||
return 0; | ||
} | ||
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// Invoked when received SCSI_CMD_INQUIRY | ||
// Application fill vendor id, product id and revision with string up to 8, 16, 4 characters respectively | ||
void tud_msc_inquiry_cb(uint8_t lun, uint8_t vendor_id[8], uint8_t product_id[16], uint8_t product_rev[4]) { | ||
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const char vid[] = "Micropy"; | ||
const char pid[] = "Mass Storage"; | ||
const char rev[] = "1.0"; | ||
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strncpy((char *)vendor_id, vid, 8); | ||
strncpy((char *)product_id, pid, 16); | ||
strncpy((char *)product_rev, rev, 4); | ||
} | ||
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// Invoked when received Test Unit Ready command. | ||
// return true allowing host to read/write this LUN e.g SD card inserted | ||
bool tud_msc_test_unit_ready_cb(uint8_t lun) { | ||
if (ejected) { | ||
tud_msc_set_sense(lun, SCSI_SENSE_NOT_READY, 0x3a, 0x00); | ||
return false; | ||
} | ||
return true; | ||
} | ||
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// Invoked when received SCSI_CMD_READ_CAPACITY_10 and SCSI_CMD_READ_FORMAT_CAPACITY to determine the disk size | ||
// Application update block count and block size | ||
void tud_msc_capacity_cb(uint8_t lun, uint32_t *block_count, uint16_t *block_size) { | ||
*block_size = BLOCK_SIZE; | ||
*block_count = BLOCK_COUNT; | ||
} | ||
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// Invoked when received Start Stop Unit command | ||
// - Start = 0 : stopped power mode, if load_eject = 1 : unload disk storage | ||
// - Start = 1 : active mode, if load_eject = 1 : load disk storage | ||
bool tud_msc_start_stop_cb(uint8_t lun, uint8_t power_condition, bool start, bool load_eject) { | ||
if (load_eject) { | ||
if (start) { | ||
// load disk storage | ||
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ejected = false; | ||
} else { | ||
// unload disk storage | ||
ejected = true; | ||
} | ||
tud_msc_device_ejected_cb(ejected); | ||
} | ||
return true; | ||
} | ||
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// Callback invoked when received READ10 command. | ||
// Copy disk's data to buffer (up to bufsize) and return number of copied bytes. | ||
int32_t tud_msc_read10_cb(uint8_t lun, uint32_t lba, uint32_t offset, void *buffer, uint32_t bufsize) { | ||
uint32_t count = bufsize / BLOCK_SIZE; | ||
memcpy(buffer, (void *)(FLASH_MMAP_ADDR + lba * BLOCK_SIZE), count * BLOCK_SIZE); | ||
return count * BLOCK_SIZE; | ||
} | ||
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// Callback invoked when received WRITE10 command. | ||
// Process data in buffer to disk's storage and return number of written bytes | ||
int32_t tud_msc_write10_cb(uint8_t lun, uint32_t lba, uint32_t offset, uint8_t *buffer, uint32_t bufsize) { | ||
uint32_t count = bufsize / BLOCK_SIZE; | ||
uint32_t ints = save_and_disable_interrupts(); | ||
flash_range_erase(FLASH_BASE_ADDR + lba * BLOCK_SIZE, count * BLOCK_SIZE); | ||
flash_range_program(FLASH_BASE_ADDR + lba * BLOCK_SIZE, buffer, count * BLOCK_SIZE); | ||
restore_interrupts(ints); | ||
return count * BLOCK_SIZE; | ||
} | ||
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// Callback invoked when received an SCSI command not in built-in list below | ||
// - READ_CAPACITY10, READ_FORMAT_CAPACITY, INQUIRY, MODE_SENSE6, REQUEST_SENSE | ||
// - READ10 and WRITE10 has their own callbacks | ||
int32_t tud_msc_scsi_cb(uint8_t lun, uint8_t const scsi_cmd[16], void *buffer, uint16_t bufsize) { | ||
int32_t resplen = 0; | ||
switch (scsi_cmd[0]) { | ||
case SCSI_CMD_PREVENT_ALLOW_MEDIUM_REMOVAL: | ||
// Sync the logical unit if needed. | ||
break; | ||
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default: | ||
// Set Sense = Invalid Command Operation | ||
tud_msc_set_sense(lun, SCSI_SENSE_ILLEGAL_REQUEST, 0x20, 0x00); | ||
// negative means error -> tinyusb could stall and/or response with failed status | ||
resplen = -1; | ||
break; | ||
} | ||
return resplen; | ||
} | ||
#endif |
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