Hi, i got a problem with the M52259DEMO board, i can't intialiaze the ADC, and is not a coding problem, it doesn't matter if i use the example config nor a custom configuration; the ADC does'nt start.
In the Debug mode i was able to track down the failure in the _io_fopen function; there it seems that the MQX kernel just detects two devices in the IO_DEVICES struct listed here
static FILE_PTR fd_adc, fd_ch = NULL; //Apuntadores para el ADC y para el Canal del ADCconst ADC_INIT_STRUCT adc_init = { ADC_RESOLUTION_DEFAULT, /* resolucion del ADC*/};const ADC_INIT_CHANNEL_STRUCT adc_ch_param = { ADC_SOURCE_AN0, //Configura lo que se va a leer ADC_CHANNEL_MEASURE_LOOP | ADC_CHANNEL_START_NOW, 10, /* numero de muestras en una secuencia */ 0, /* Offset de tiempo desde el trigger en ns */ 50000, /* perioso en us (50ms) */ 0x10000, /* Rango de escala del resultado (no usado) */ 1, /* Tamaño del buffer circular (sample count) */ ADC_TRIGGER_1 /* ID del trigger logico que inicia este canal del ADC */};/* * Configurar ADC para que lea los valores en potenciometro y acelerometro */ void InitADC(void) { fd_adc = fopen("adc:", (const char*)&adc_init); if (NULL == fd_adc) { printf("\nFallo la inicializacion del ADC\n"); return; } fd_ch = fopen("adc:0", (const char*)&adc_ch_param); if (fd_ch == NULL) { printf("\nadc:0 Error al abrir el canal del ADC\n"); return; }}
The IO_DEVICE struct that i've found in the Kernel_data in _io_fopen is:
IO_DEVICE --address: 0x00000000 Identifier: "/" --address: 0x20000A78 Identifier: "ttya:" --address: 0x20000C10 Identifer: "gpio:" --address: 0x20000330 Identifier: "ÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿÿ"
and that's all the devices, so when i try to access the "adc:" returns error because the function did't found such device. Any idea about how can i initialiaze the ADC? Thanks in advance.
