stm32/usb: Add "msc" kw-arg to pyb.usb_mode to select MSC logical units.
With this the user can select multiple logical units to expose over USB MSC at once, eg: pyb.usb_mode('VCP+MSC', msc=(pyb.Flash(), pyb.SDCard())). The default behaviour is the original behaviour of just one unit at a time.
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9e68eec8ea
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53200247b7
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@ -645,7 +645,7 @@ soft_reset:
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#if MICROPY_HW_ENABLE_USB
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// init USB device to default setting if it was not already configured
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if (!(pyb_usb_flags & PYB_USB_FLAG_USB_MODE_CALLED)) {
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pyb_usb_dev_init(USBD_VID, USBD_PID_CDC_MSC, USBD_MODE_CDC_MSC, NULL);
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pyb_usb_dev_init(USBD_VID, USBD_PID_CDC_MSC, USBD_MODE_CDC_MSC, 0, NULL, NULL);
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}
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#endif
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@ -120,7 +120,7 @@ void pyb_usb_init0(void) {
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pyb_usb_vcp_init0();
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}
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bool pyb_usb_dev_init(uint16_t vid, uint16_t pid, uint8_t mode, USBD_HID_ModeInfoTypeDef *hid_info) {
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bool pyb_usb_dev_init(uint16_t vid, uint16_t pid, uint8_t mode, size_t msc_n, const void *msc_unit, USBD_HID_ModeInfoTypeDef *hid_info) {
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usb_device_t *usb_dev = &usb_device;
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if (!usb_dev->enabled) {
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// only init USB once in the device's power-lifetime
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@ -146,18 +146,22 @@ bool pyb_usb_dev_init(uint16_t vid, uint16_t pid, uint8_t mode, USBD_HID_ModeInf
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}
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// Configure the MSC interface
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const void *lu[1];
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switch (pyb_usb_storage_medium) {
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#if MICROPY_HW_ENABLE_SDCARD
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case PYB_USB_STORAGE_MEDIUM_SDCARD:
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lu[0] = &pyb_sdcard_type;
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break;
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#endif
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default:
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lu[0] = &pyb_flash_type;
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break;
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const void *msc_unit_default[1];
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if (msc_n == 0) {
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msc_n = 1;
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msc_unit = msc_unit_default;
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switch (pyb_usb_storage_medium) {
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#if MICROPY_HW_ENABLE_SDCARD
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case PYB_USB_STORAGE_MEDIUM_SDCARD:
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msc_unit_default[0] = &pyb_sdcard_type;
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break;
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#endif
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default:
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msc_unit_default[0] = &pyb_flash_type;
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break;
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}
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}
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usbd_msc_init_lu(1, lu);
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usbd_msc_init_lu(msc_n, msc_unit);
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USBD_MSC_RegisterStorage(&usb_dev->usbd_cdc_msc_hid_state, (USBD_StorageTypeDef*)&usbd_msc_fops);
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// start the USB device
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@ -226,11 +230,12 @@ usbd_cdc_itf_t *usb_vcp_get(int idx) {
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*/
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STATIC mp_obj_t pyb_usb_mode(size_t n_args, const mp_obj_t *pos_args, mp_map_t *kw_args) {
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enum { ARG_mode, ARG_vid, ARG_pid, ARG_hid, ARG_high_speed };
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enum { ARG_mode, ARG_vid, ARG_pid, ARG_msc, ARG_hid, ARG_high_speed };
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static const mp_arg_t allowed_args[] = {
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{ MP_QSTR_mode, MP_ARG_REQUIRED | MP_ARG_OBJ, {.u_rom_obj = MP_ROM_PTR(&mp_const_none_obj)} },
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{ MP_QSTR_vid, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = USBD_VID} },
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{ MP_QSTR_pid, MP_ARG_KW_ONLY | MP_ARG_INT, {.u_int = -1} },
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{ MP_QSTR_msc, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_rom_obj = MP_ROM_PTR(&mp_const_empty_tuple_obj)} },
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{ MP_QSTR_hid, MP_ARG_KW_ONLY | MP_ARG_OBJ, {.u_rom_obj = MP_ROM_PTR(&pyb_usb_hid_mouse_obj)} },
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#if USBD_SUPPORT_HS_MODE
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{ MP_QSTR_high_speed, MP_ARG_KW_ONLY | MP_ARG_BOOL, {.u_bool = false} },
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@ -347,6 +352,30 @@ STATIC mp_obj_t pyb_usb_mode(size_t n_args, const mp_obj_t *pos_args, mp_map_t *
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goto bad_mode;
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}
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// Get MSC logical units
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size_t msc_n = 0;
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const void *msc_unit[USBD_MSC_MAX_LUN];
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if (mode & USBD_MODE_IFACE_MSC) {
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mp_obj_t *items;
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mp_obj_get_array(args[ARG_msc].u_obj, &msc_n, &items);
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if (msc_n > USBD_MSC_MAX_LUN) {
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mp_raise_ValueError("too many logical units");
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}
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for (size_t i = 0; i < msc_n; ++i) {
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mp_obj_type_t *type = mp_obj_get_type(items[i]);
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if (type == &pyb_flash_type
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|| type == &pyb_sdcard_type
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#if MICROPY_HW_ENABLE_MMCARD
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|| type == &pyb_mmcard_type
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#endif
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) {
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msc_unit[i] = type;
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} else {
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mp_raise_ValueError("unsupported logical unit");
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}
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}
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}
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// get hid info if user selected such a mode
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USBD_HID_ModeInfoTypeDef hid_info;
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if (mode & USBD_MODE_IFACE_HID) {
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@ -372,7 +401,7 @@ STATIC mp_obj_t pyb_usb_mode(size_t n_args, const mp_obj_t *pos_args, mp_map_t *
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#endif
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// init the USB device
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if (!pyb_usb_dev_init(vid, pid, mode, &hid_info)) {
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if (!pyb_usb_dev_init(vid, pid, mode, msc_n, msc_unit, &hid_info)) {
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goto bad_mode;
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}
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@ -66,7 +66,7 @@ MP_DECLARE_CONST_FUN_OBJ_0(pyb_have_cdc_obj); // deprecated
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MP_DECLARE_CONST_FUN_OBJ_1(pyb_hid_send_report_obj); // deprecated
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void pyb_usb_init0(void);
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bool pyb_usb_dev_init(uint16_t vid, uint16_t pid, uint8_t mode, USBD_HID_ModeInfoTypeDef *hid_info);
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bool pyb_usb_dev_init(uint16_t vid, uint16_t pid, uint8_t mode, size_t msc_n, const void *msc_unit, USBD_HID_ModeInfoTypeDef *hid_info);
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void pyb_usb_dev_deinit(void);
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bool usb_vcp_is_enabled(void);
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int usb_vcp_recv_byte(uint8_t *c); // if a byte is available, return 1 and put the byte in *c, else return 0
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@ -33,8 +33,6 @@
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#include "storage.h"
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#include "sdcard.h"
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#define USBD_MSC_MAX_LUN (2)
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// This flag is needed to support removal of the medium, so that the USB drive
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// can be unmounted and won't be remounted automatically.
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#define FLAGS_STARTED (0x01)
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@ -26,6 +26,8 @@
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#ifndef MICROPY_INCLUDED_STM32_USBD_MSC_INTERFACE_H
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#define MICROPY_INCLUDED_STM32_USBD_MSC_INTERFACE_H
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#define USBD_MSC_MAX_LUN (2)
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extern const USBD_StorageTypeDef usbd_msc_fops;
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void usbd_msc_init_lu(size_t lu_n, const void *lu_data);
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