I have a TWR-KV58F220M board and I'm working on flash update routines.
If I use the default BOARD_BootClockRUN() routine at startup I am able to run the pflash demo code with no problems. If I use a customized BOARD_BootClockHSRUN() routine I get a kStatus_FLASH_AccessError when I attempt to erase a flash sector. The two clock initialization routines are shown below. In both cases my bus/flash clock should be running at 25 MHz. Any thoughts?
void BOARD_BootClockRUN(void)
{
/*
* Core clock: 150MHz
*/
// PLL: MCGOUTCLK = OSCCLK * (VDIV+16)/(2*(PRDIV+1))
// = 50 MHz * (8+16)/(2*(3+1))
// = 50 MHz * 24/8
// = 150 MHz
const mcg_pll_config_t pll0Config = {
.enableMode = 0U,
.prdiv = 3U,
.vdiv = 8U,
};
// SIM: CLKn = MCGCLK / (OUTCLKn+1)
// system clock = 150 MHz / (0 + 1) = 150 MHz
// Fast Peripheral clock = 150 MHz / (1 + 1) = 75 MHz
// Flexbus clock = 150 MHz / (1 + 1) = 75MHz
// Bus/Flash clock = 150 MHz / (5 + 1) = 25 MHz
const sim_clock_config_t simConfig = {
.pllFllSel = 1U, /* PLLFLLSEL select PLL */
.er32kSrc = 3U, /* ERCLK32K selection, use LPO. */
.clkdiv1 = 0x01150000U, /* SIM_CLKDIV1: OUTDIV1 = 0, OUTDIV2 = 1, OUTDIV3 = 1, OUTDIV4 = 5 */
};
CLOCK_SetSimSafeDivs();
BOARD_InitOsc0();
CLOCK_BootToPeeMode(kMCG_OscselOsc, kMCG_PllClkSelPll0, &pll0Config);
CLOCK_SetInternalRefClkConfig(kMCG_IrclkEnable, kMCG_IrcSlow, 0);
CLOCK_SetSimConfig(&simConfig);
SystemCoreClock = 150000000U;
}
void BOARD_BootClockHSRUN(void)
{
/*
* Core clock: 200MHz
*/
SMC_SetPowerModeProtection(SMC, kSMC_AllowPowerModeAll);
SMC_SetPowerModeHsrun(SMC);
while (SMC_GetPowerModeState(SMC) != kSMC_PowerStateHsrun)
{
}
CLOCK_SetSimSafeDivs();
BOARD_InitOsc0();
// PLL: MCGOUTCLK = OSCCLK * (VDIV+16)/(2*(PRDIV+1))
// = 50 MHz * (24+16)/(2*(4+1))
// = 50 MHz * 40/10
// = 200 MHz
const mcg_pll_config_t pll0Config = {
.enableMode = 0U,
.prdiv = 4U,
.vdiv = 24U,
};
// SIM: CLKn = MCGCLK / (OUTCLKn+1)
// system clock = 200 MHz / (0 + 1) = 200 MHz
// Fast Peripheral clock = 200 MHz / (1 + 1) = 100 MHz
// Flexbus clock = 200 MHz / (2 + 1) = 66.67 MHz
// Bus/Flash clock = 200 MHz / (7 + 1) = 25 MHz
const sim_clock_config_t simConfig = {
.pllFllSel = 1U, /* PLLFLLSEL select PLL */
.er32kSrc = 3U, /* ERCLK32K selection, use LPO. */
.clkdiv1 = 0x01270000U, /* SIM_CLKDIV1: OUTDIV1 = 0, OUTDIV2 = 1, OUTDIV3 = 2, OUTDIV4 = 7 */
};
CLOCK_BootToPeeMode(kMCG_OscselOsc, kMCG_PllClkSelPll0, &pll0Config);
CLOCK_SetInternalRefClkConfig(kMCG_IrclkEnable, kMCG_IrcSlow, 0);
CLOCK_SetSimConfig(&simConfig);
SystemCoreClock = 200000000U;
}
