Hi David,
According to what i am seeing in your code, your are using KM128SWDRV_R4_0_0 software version for KM family. If so, there is a useful example that shows all the configuration for AFE peripheral for polling and interrupt mode and low power as well. (<FREESCALE_PATH>\KM128SWDRV_R4_0_0\build\cw_10_6\projects)
In this example, KM is configured as follows:
void main(void)
{
/* initialize SIM module */
SIM_Init (SIM_MODULE_ALL_PERIPH_ON_CONFIG);
/* clock mode 2:1:1, 48MHz */
SIM_SetClkMode (SYSCLK_MODE1);
SIM_SetClkDiv (SYSCLK_DIV1);
FLL_Init (FLL_MODULE_FEE_48MHZ_CONFIG);
/* sets 32 KHz RTC Oscillator as the source of the PLL and enable PLL */
PLL_Enable (PLL32KREF_SRC1);
/* VREF module must be initialized after SIM module */
VREF_Init (VREF_MODULE_CHOP_ON_1V75_0V4_HPWR_CONFIG,
VREF_SWITCH_S1_L_S2_L_S3_L_BUFF_ON);
/* AFE_CH1 init */
SIM_SelAfePllClk (SIM_MCG_PLL_CLK);
AFE_ChInit (CH0, AFE_CH_SWTRG_CCM_PGAOFF_CONFIG(DEC_OSR64), 0, PRI_LVL0, NULL);
AFE_Init (AFE_MODULE_RJFORMAT_CONFIG(AFE_PLL_CLK, AFE_DIV2, 12288000));
/* initialize UART and FreeMASTER */
PORT_Init (PORTI, PORT_MODULE_ALT2_MODE, PIN0|PIN1);
UART_Init (UART1, UART_MODULE_POLLMODE_CONFIG(38400,48e6));
FMSTR_Init();
diagnostic_setup ();
/* trigger AFE conversions */
AFE_SwTrigger (CH0);
/* main loop */
while (1)
{
if (AFE_ChReady(CH0))
{
result = AFE_ChRead (CH0);
FMSTR_Recorder ();
}
FMSTR_Poll ();
}
}
In this configuration, FreeMaster is used so you can ommit FMSTR_ functions.
I hope this can help you.
If you have any specific doubt please let me know it.
Regards,
Isaac
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