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main.c: Fix safe mode

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Back in #5536 I modified how boot_out.txt got written. However, I broke
USB enumeration in the safe-mode case.  This fixes it so that a
safe-mode board still connects on USB with all defaults. (tested on a
macropad)
This commit is contained in:
Jeff Epler 2021-11-08 08:18:31 -06:00
parent c27b3a0e4f
commit c607efe557
1 changed files with 41 additions and 43 deletions
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84
main.c
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@ -645,10 +645,6 @@ STATIC void __attribute__ ((noinline)) run_boot_py(safe_mode_t safe_mode) {
&& safe_mode == NO_SAFE_MODE
&& MP_STATE_VM(vfs_mount_table) != NULL;
if (!ok_to_run) {
return;
}
static const char * const boot_py_filenames[] = STRING_LIST("boot.py", "boot.txt");
// Do USB setup even if boot.py is not run.
@ -661,54 +657,56 @@ STATIC void __attribute__ ((noinline)) run_boot_py(safe_mode_t safe_mode) {
usb_set_defaults();
#endif
#ifdef CIRCUITPY_BOOT_OUTPUT_FILE
vstr_t boot_text;
vstr_init(&boot_text, 512);
boot_output = &boot_text;
#endif
// Write version info
mp_printf(&mp_plat_print, "%s\nBoard ID:%s\n", MICROPY_FULL_VERSION_INFO, CIRCUITPY_BOARD_ID);
pyexec_result_t result = {0, MP_OBJ_NULL, 0};
bool found_boot = maybe_run_list(boot_py_filenames, &result);
(void) found_boot;
if (ok_to_run) {
#ifdef CIRCUITPY_BOOT_OUTPUT_FILE
vstr_t boot_text;
vstr_init(&boot_text, 512);
boot_output = &boot_text;
#endif
// Write version info
mp_printf(&mp_plat_print, "%s\nBoard ID:%s\n", MICROPY_FULL_VERSION_INFO, CIRCUITPY_BOARD_ID);
bool found_boot = maybe_run_list(boot_py_filenames, &result);
(void) found_boot;
#ifdef CIRCUITPY_BOOT_OUTPUT_FILE
// Get the base filesystem.
fs_user_mount_t *vfs = (fs_user_mount_t *) MP_STATE_VM(vfs_mount_table)->obj;
FATFS *fs = &vfs->fatfs;
#ifdef CIRCUITPY_BOOT_OUTPUT_FILE
// Get the base filesystem.
fs_user_mount_t *vfs = (fs_user_mount_t *) MP_STATE_VM(vfs_mount_table)->obj;
FATFS *fs = &vfs->fatfs;
boot_output = NULL;
bool write_boot_output = (common_hal_mcu_processor_get_reset_reason() == RESET_REASON_POWER_ON);
FIL boot_output_file;
if (f_open(fs, &boot_output_file, CIRCUITPY_BOOT_OUTPUT_FILE, FA_READ) == FR_OK) {
char *file_contents = m_new(char, boot_text.alloc);
UINT chars_read;
if (f_read(&boot_output_file, file_contents, 1+boot_text.len, &chars_read) == FR_OK) {
write_boot_output =
(chars_read != boot_text.len) || (memcmp(boot_text.buf, file_contents, chars_read) != 0);
boot_output = NULL;
bool write_boot_output = (common_hal_mcu_processor_get_reset_reason() == RESET_REASON_POWER_ON);
FIL boot_output_file;
if (f_open(fs, &boot_output_file, CIRCUITPY_BOOT_OUTPUT_FILE, FA_READ) == FR_OK) {
char *file_contents = m_new(char, boot_text.alloc);
UINT chars_read;
if (f_read(&boot_output_file, file_contents, 1+boot_text.len, &chars_read) == FR_OK) {
write_boot_output =
(chars_read != boot_text.len) || (memcmp(boot_text.buf, file_contents, chars_read) != 0);
}
// no need to f_close the file
}
// no need to f_close the file
}
if (write_boot_output) {
// Wait 1 second before opening CIRCUITPY_BOOT_OUTPUT_FILE for write,
// in case power is momentary or will fail shortly due to, say a low, battery.
mp_hal_delay_ms(1000);
if (write_boot_output) {
// Wait 1 second before opening CIRCUITPY_BOOT_OUTPUT_FILE for write,
// in case power is momentary or will fail shortly due to, say a low, battery.
mp_hal_delay_ms(1000);
// USB isn't up, so we can write the file.
// operating at the oofatfs (f_open) layer means the usb concurrent write permission
// is not even checked!
f_open(fs, &boot_output_file, CIRCUITPY_BOOT_OUTPUT_FILE, FA_WRITE | FA_CREATE_ALWAYS);
UINT chars_written;
f_write(&boot_output_file, boot_text.buf, boot_text.len, &chars_written);
f_close(&boot_output_file);
filesystem_flush();
// USB isn't up, so we can write the file.
// operating at the oofatfs (f_open) layer means the usb concurrent write permission
// is not even checked!
f_open(fs, &boot_output_file, CIRCUITPY_BOOT_OUTPUT_FILE, FA_WRITE | FA_CREATE_ALWAYS);
UINT chars_written;
f_write(&boot_output_file, boot_text.buf, boot_text.len, &chars_written);
f_close(&boot_output_file);
filesystem_flush();
}
#endif
}
#endif
#if CIRCUITPY_USB
// Some data needs to be carried over from the USB settings in boot.py