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fix eeprom issues after cold boot

teensy4-core
PaulStoffregen 5 years ago
parent
commit
710f215fee
1 changed files with 6 additions and 1 deletions
  1. +6
    -1
      teensy4/eeprom.c

+ 6
- 1
teensy4/eeprom.c View File

FLEXSPI_LUTCR = FLEXSPI_LUTCR_UNLOCK; FLEXSPI_LUTCR = FLEXSPI_LUTCR_UNLOCK;
FLEXSPI_IPCR0 = 0; FLEXSPI_IPCR0 = 0;
FLEXSPI_LUT60 = LUT0(CMD_SDR, PINS1, 0x06); // 06 = write enable FLEXSPI_LUT60 = LUT0(CMD_SDR, PINS1, 0x06); // 06 = write enable
FLEXSPI_LUT61 = 0;
FLEXSPI_LUT62 = 0;
FLEXSPI_LUT63 = 0;
FLEXSPI_IPCR1 = FLEXSPI_IPCR1_ISEQID(15); FLEXSPI_IPCR1 = FLEXSPI_IPCR1_ISEQID(15);
FLEXSPI_IPCMD = FLEXSPI_IPCMD_TRG; FLEXSPI_IPCMD = FLEXSPI_IPCMD_TRG;
arm_dcache_delete(addr, len); // purge old data from ARM's cache arm_dcache_delete(addr, len); // purge old data from ARM's cache
FLEXSPI_LUTKEY = FLEXSPI_LUTKEY_VALUE; FLEXSPI_LUTKEY = FLEXSPI_LUTKEY_VALUE;
FLEXSPI_LUTCR = FLEXSPI_LUTCR_UNLOCK; FLEXSPI_LUTCR = FLEXSPI_LUTCR_UNLOCK;
FLEXSPI_LUT60 = LUT0(CMD_SDR, PINS1, 0x06); // 06 = write enable FLEXSPI_LUT60 = LUT0(CMD_SDR, PINS1, 0x06); // 06 = write enable
FLEXSPI_LUT61 = 0;
FLEXSPI_LUT62 = 0;
FLEXSPI_LUT63 = 0;
FLEXSPI_IPCR0 = 0; FLEXSPI_IPCR0 = 0;
FLEXSPI_IPCR1 = FLEXSPI_IPCR1_ISEQID(15); FLEXSPI_IPCR1 = FLEXSPI_IPCR1_ISEQID(15);
FLEXSPI_IPCMD = FLEXSPI_IPCMD_TRG; FLEXSPI_IPCMD = FLEXSPI_IPCMD_TRG;
while (!(FLEXSPI_INTR & FLEXSPI_INTR_IPCMDDONE)) ; // wait while (!(FLEXSPI_INTR & FLEXSPI_INTR_IPCMDDONE)) ; // wait
FLEXSPI_INTR = FLEXSPI_INTR_IPCMDDONE; FLEXSPI_INTR = FLEXSPI_INTR_IPCMDDONE;
FLEXSPI_LUT60 = LUT0(CMD_SDR, PINS1, 0x20) | LUT1(ADDR_SDR, PINS1, 24); // 20 = sector erase FLEXSPI_LUT60 = LUT0(CMD_SDR, PINS1, 0x20) | LUT1(ADDR_SDR, PINS1, 24); // 20 = sector erase
FLEXSPI_LUT61 = 0;
FLEXSPI_IPCR0 = (uint32_t)addr & 0x001FF000; FLEXSPI_IPCR0 = (uint32_t)addr & 0x001FF000;
FLEXSPI_IPCR1 = FLEXSPI_IPCR1_ISEQID(15); FLEXSPI_IPCR1 = FLEXSPI_IPCR1_ISEQID(15);
FLEXSPI_IPCMD = FLEXSPI_IPCMD_TRG; FLEXSPI_IPCMD = FLEXSPI_IPCMD_TRG;

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