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Merge pull request #539 from FrankBoesing/patch-2
fix flash_wait(), fixes EEPROM write with -Os optimization https://forum.pjrc.com/threads/66200teensy4-core
Paul Stoffregen
3 years ago
1 changed files with 2 additions and 3 deletions
+ 2
- 3
teensy4/eeprom.c
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| FLEXSPI_IPCR0 = 0; | FLEXSPI_IPCR0 = 0; | ||||
| FLEXSPI_IPCR1 = FLEXSPI_IPCR1_ISEQID(15) | FLEXSPI_IPCR1_IDATSZ(1); | FLEXSPI_IPCR1 = FLEXSPI_IPCR1_ISEQID(15) | FLEXSPI_IPCR1_IDATSZ(1); | ||||
| FLEXSPI_IPCMD = FLEXSPI_IPCMD_TRG; | FLEXSPI_IPCMD = FLEXSPI_IPCMD_TRG; | ||||
| while (!(FLEXSPI_INTR & FLEXSPI_INTR_IPCMDDONE)) { | |||||
| asm("nop"); | |||||
| } | |||||
| while (!(FLEXSPI_INTR & FLEXSPI_INTR_IPCMDDONE)) {;} | |||||
| FLEXSPI_INTR = FLEXSPI_INTR_IPCMDDONE; | FLEXSPI_INTR = FLEXSPI_INTR_IPCMDDONE; | ||||
| asm("":::"memory"); | |||||
| status = *(uint8_t *)&FLEXSPI_RFDR0; | status = *(uint8_t *)&FLEXSPI_RFDR0; | ||||
| } while (status & 1); | } while (status & 1); | ||||
| FLEXSPI_MCR0 |= FLEXSPI_MCR0_SWRESET; // purge stale data from FlexSPI's AHB FIFO | FLEXSPI_MCR0 |= FLEXSPI_MCR0_SWRESET; // purge stale data from FlexSPI's AHB FIFO |
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