Other Parts Discussed in Thread: TDA4VM,
Tool/software:
We are doing a project where we want to read the SW3 user button state from one of the R7 microcontrollers on the TDA4VM.
We are using SDK 08_06_01 on the EVM development board (blue one).
We have modified the ipc-echo-test example and referred to the gpio blink test to see how the GPIO driver works. We have modified the following files to try to iomux the WKUP_GPIO0_4 pin, documented by the EVM users guide to map the switch into the correct pin.
File: J721E_pinmux_data.c
static pinmuxPerCfg_t gWkup_gpio0PinCfg[] =
{
/* MCU_MCAN1_TX -> WKUP_GPIO0_4 -> G25; As input*/
{
PIN_WKUP_GPIO0_4, PIN_MODE(7) | \
((PIN_PULL_DISABLE | PIN_INPUT_ENABLE) & (~PIN_PULL_DIRECTION))
},
{PINMUX_END}
}
pinmuxBoardCfg_t gJ721E_WkupPinmuxData[] =
{
{0, TRUE, gWkup_gpio0PinCfg},
{PINMUX_END}
};
Then in our c code we have the following:
#define GPIO_SW3_PORT_NUM 0 /* Wakup GPIO0 */
#define GPIO_SW3_PIN_NUM 4 /* GPIO0_4 for SW3 according to */
#define SWITCH3_GPIO_INDEX 0
/* GPIO Driver board specific pin configuration structure */
GPIO_PinConfig gpioPinConfigs[] =
{
/* Input pin with interrupt enabled */
GPIO_DEVICE_CONFIG(GPIO_SW3_PORT_NUM, GPIO_SW3_PIN_NUM) | GPIO_CFG_IN_INT_RISING | GPIO_CFG_INPUT
};
/* GPIO Driver call back functions */
GPIO_CallbackFxn gpioCallbackFunctions[] =
{
NULL
};
/* GPIO Driver configuration structure */
GPIO_v0_Config GPIO_v0_config =
{
gpioPinConfigs,
gpioCallbackFunctions,
sizeof(gpioPinConfigs) / sizeof(GPIO_PinConfig),
sizeof(gpioCallbackFunctions) / sizeof(GPIO_CallbackFxn),
0x8U
};
// Setup GPIO for the EVM SW3 gpio
void SetupEvmGPIO()
{
App_printf("Randys MCU_2_1 SetupEvmGPIO\r\n");
//---------------- Board/HW init for GPIO ---------------------
Board_initCfg boardCfg;
GPIO_v0_HwAttrs gpio_cfg;
/* Get the default configuration configurations */
GPIO_socGetInitCfg(GPIO_SW3_PORT_NUM, &gpio_cfg);
boardCfg = BOARD_INIT_PINMUX_CONFIG |
BOARD_INIT_MODULE_CLOCK |
BOARD_INIT_UART_STDIO;
Board_init(boardCfg);
/*== Will have to do other interrupt routing for maping wakeup gpio to main domain core. */
/* change default GPIO port from MAIN GPIO0 to WAKEUP GPIO0 to access TP45 */
gpio_cfg.baseAddr = CSL_WKUP_GPIO0_BASE;
GPIO_configIntRouter(GPIO_SW3_PORT_NUM, GPIO_SW3_PIN_NUM, 0, &gpio_cfg);
/* For J721E EVM, there is not GPIO pin directly connected to LEDs */
/* J7ES: use WAKEUP GPIO0_6 --> TP45 for testing */
/* Set the default GPIO init configurations */
GPIO_socSetInitCfg(GPIO_SW3_PORT_NUM, &gpio_cfg);
//---------------- SW init for GPIO ---------------------
GPIO_init();
/* Set the callback function */
//GPIO_setCallback(SWITCH3_GPIO_INDEX, AppGpioCallbackFxn);
/* Enable GPIO interrupt on the specific gpio pin */
//GPIO_enableInt(SWITCH3_GPIO_INDEX);
// Try to read button, Index into the GPIO_v0 config array
uint32_t swVal = GPIO_read(SWITCH3_GPIO_INDEX);
const uint8_t NUM_LOOPS = 100;
for ( int i = 0; i < NUM_LOOPS; ++i)
{
UART_printf("SW3 VaLue is %d, loop %d of %d\r\n", swVal, i, NUM_LOOPS);
App_printf("SW3 VaLue is %d, loop %d of %d\r\n", swVal, i, NUM_LOOPS);
TaskP_sleep( 500 );
swVal = GPIO_read(SWITCH3_GPIO_INDEX);
}
}
The UART_print doesn't work but we are able to see the output in the remoteproc5 (mcu2_1) trace output.
I cannot see the button state change.
