基于RT1010-学习上手NXPMCU的SDK代码包和IDE

zhangt0713 · 发表于 2021-8-2 17:43:03

本帖最后由 zhangt0713 于 2021-8-9 11:55 编辑

NXP Semiconductor i.MX RT1010评估套件是一款两层通孔USB供电PCB，可演示i.MX RT1010跨界MCU的特性。该处理器基于Arm® Cortex®-M7内核，非常适合用于音频、工业、电机控制、家用电器和物联网应用。该评估板是一款入门级开发板，它可让开发人员先熟悉处理器，然后再对特定设计投入大量资源。
最近搞到一块RT1010的评估板，参考NXP课堂推出了恩智浦小课堂第二十六期—如何上手NXP家MCU的SDK代码包和IDE 。上手点灯，串口，MCUconfig tool的使用
直接在MCU XPRESSO IDE中下载RT1010的SDK。

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导入官方的SDK后，打开MCUconfig tool

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配置串口4引脚为开发板上J56,14和16，分别为RX,TX. 微信图片_20210803083217.jpg

引脚配置代码如下：

void BOARD_InitPins(void) {
CLOCK_EnableClock(kCLOCK_Iomuxc); /* iomuxc clock (iomuxc_clk_enable): 0x03U */
/* GPIO configuration of SAI1_MCLK on GPIO_08 (pin 4) */
gpio_pin_config_t SAI1_MCLK_config = {
.direction = kGPIO_DigitalOutput,
.outputLogic = 0U,
.interruptMode = kGPIO_NoIntmode
};
/* Initialize GPIO functionality on GPIO_08 (pin 4) */
GPIO_PinInit(GPIO1, 8U, &SAI1_MCLK_config);
IOMUXC_SetPinMux(
IOMUXC_GPIO_08_GPIOMUX_IO08, /* GPIO_08 is configured as GPIOMUX_IO08 */
0U); /* Software Input On Field: Input Path is determined by functionality */
IOMUXC_SetPinMux(
IOMUXC_GPIO_09_LPUART1_RXD, /* GPIO_09 is configured as LPUART1_RXD */
0U); /* Software Input On Field: Input Path is determined by functionality */
IOMUXC_SetPinMux(
IOMUXC_GPIO_10_LPUART1_TXD, /* GPIO_10 is configured as LPUART1_TXD */
0U); /* Software Input On Field: Input Path is determined by functionality */
IOMUXC_SetPinMux(
IOMUXC_GPIO_11_GPIOMUX_IO11, /* GPIO_11 is configured as GPIOMUX_IO11 */
0U); /* Software Input On Field: Input Path is determined by functionality */
IOMUXC_SetPinMux(
IOMUXC_GPIO_AD_01_LPUART4_RXD, /* GPIO_AD_01 is configured as LPUART4_RXD */
0U); /* Software Input On Field: Input Path is determined by functionality */
IOMUXC_SetPinMux(
IOMUXC_GPIO_AD_02_LPUART4_TXD, /* GPIO_AD_02 is configured as LPUART4_TXD */
0U); /* Software Input On Field: Input Path is determined by functionality */
IOMUXC_GPR->GPR26 = ((IOMUXC_GPR->GPR26 &
(~(IOMUXC_GPR_GPR26_GPIO_SEL_MASK))) /* Mask bits to zero which are setting */
| IOMUXC_GPR_GPR26_GPIO_SEL(0x00U) /* Select GPIO1 or GPIO2: 0x00U */
);
IOMUXC_SetPinConfig(
IOMUXC_GPIO_08_GPIOMUX_IO08, /* GPIO_08 PAD functional properties : */
0x30A0U); /* Slew Rate Field: Slow Slew Rate
Drive Strength Field: R0/4
Speed Field: fast(150MHz)
Open Drain Enable Field: Open Drain Disabled
Pull / Keep Enable Field: Pull/Keeper Enabled
Pull / Keep Select Field: Pull
Pull Up / Down Config. Field: 100K Ohm Pull Down
Hyst. Enable Field: Hysteresis Disabled */
IOMUXC_SetPinConfig(
IOMUXC_GPIO_09_LPUART1_RXD, /* GPIO_09 PAD functional properties : */
0x10A0U); /* Slew Rate Field: Slow Slew Rate
Drive Strength Field: R0/4
Speed Field: fast(150MHz)
Open Drain Enable Field: Open Drain Disabled
Pull / Keep Enable Field: Pull/Keeper Enabled
Pull / Keep Select Field: Keeper
Pull Up / Down Config. Field: 100K Ohm Pull Down
Hyst. Enable Field: Hysteresis Disabled */
IOMUXC_SetPinConfig(
IOMUXC_GPIO_10_LPUART1_TXD, /* GPIO_10 PAD functional properties : */
0x10A0U); /* Slew Rate Field: Slow Slew Rate
Drive Strength Field: R0/4
Speed Field: fast(150MHz)
Open Drain Enable Field: Open Drain Disabled
Pull / Keep Enable Field: Pull/Keeper Enabled
Pull / Keep Select Field: Keeper
Pull Up / Down Config. Field: 100K Ohm Pull Down
Hyst. Enable Field: Hysteresis Disabled */
IOMUXC_SetPinConfig(
IOMUXC_GPIO_11_GPIOMUX_IO11, /* GPIO_11 PAD functional properties : */
0x70A0U); /* Slew Rate Field: Slow Slew Rate
Drive Strength Field: R0/4
Speed Field: fast(150MHz)
Open Drain Enable Field: Open Drain Disabled
Pull / Keep Enable Field: Pull/Keeper Enabled
Pull / Keep Select Field: Pull
Pull Up / Down Config. Field: 47K Ohm Pull Up
Hyst. Enable Field: Hysteresis Disabled */
IOMUXC_SetPinConfig(
IOMUXC_GPIO_AD_01_LPUART4_RXD, /* GPIO_AD_01 PAD functional properties : */
0x10A0U); /* Slew Rate Field: Slow Slew Rate
Drive Strength Field: R0/4
Speed Field: fast(150MHz)
Open Drain Enable Field: Open Drain Disabled
Pull / Keep Enable Field: Pull/Keeper Enabled
Pull / Keep Select Field: Keeper
Pull Up / Down Config. Field: 100K Ohm Pull Down
Hyst. Enable Field: Hysteresis Disabled */
IOMUXC_SetPinConfig(
IOMUXC_GPIO_AD_02_LPUART4_TXD, /* GPIO_AD_02 PAD functional properties : */
0x10A0U); /* Slew Rate Field: Slow Slew Rate
Drive Strength Field: R0/4
Speed Field: fast(150MHz)
Open Drain Enable Field: Open Drain Disabled
Pull / Keep Enable Field: Pull/Keeper Enabled
Pull / Keep Select Field: Keeper
Pull Up / Down Config. Field: 100K Ohm Pull Down
Hyst. Enable Field: Hysteresis Disabled */
}

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窗口配置代码

const lpuart_config_t LPUART4_config = {
.baudRate_Bps = 115200,
.parityMode = kLPUART_ParityDisabled,
.dataBitsCount = kLPUART_EightDataBits,
.isMsb = false,
.stopBitCount = kLPUART_OneStopBit,
.txFifoWatermark = 0,
.rxFifoWatermark = 1,
.enableRxRTS = false,
.enableTxCTS = false,
.txCtsSource = kLPUART_CtsSourcePin,
.txCtsConfig = kLPUART_CtsSampleAtStart,
.rxIdleType = kLPUART_IdleTypeStartBit,
.rxIdleConfig = kLPUART_IdleCharacter1,
.enableTx = true,
.enableRx = true
};
static void LPUART4_init(void) {
LPUART_Init(LPUART4_PERIPHERAL, &LPUART4_config, LPUART4_CLOCK_SOURCE);
LPUART_EnableInterrupts(LPUART4_PERIPHERAL, kLPUART_RxDataRegFullInterruptEnable);
/* Enable interrupt LPUART4_IRQn request in the NVIC. */
EnableIRQ(LPUART4_SERIAL_RX_TX_IRQN);
}
/***********************************************************************************************************************
* Initialization functions
**********************************************************************************************************************/
void BOARD_InitPeripherals(void)
{
/* Initialize components */
LPUART4_init();
}
/***********************************************************************************************************************
* BOARD_InitBootPeripherals function
**********************************************************************************************************************/
void BOARD_InitBootPeripherals(void)
{
BOARD_InitPeripherals();
}

复制代码

自己写串口发送函数

void Usart4_Send_Datas(const uint8_t *data, size_t length)
{
LPUART_WriteBlocking(LPUART4, data, length);
}
void Usart4_Send_Strings(const char *str)
{
while(*str!='\0')
{
while (0U == (LPUART4->STAT & LPUART_STAT_TDRE_MASK));
LPUART4->DATA = *str;
str++;
}
}
void LPUART4_IRQHandler(void) //串口中断函数，把接收到的数据再发送出去
{
uint8_t data;
/* If new data arrived. */
if ((kLPUART_RxDataRegFullFlag)&LPUART_GetStatusFlags(LPUART4))
{
data = LPUART_ReadByte(LPUART4);
// demoRingBuffer[rxIndex++] = data;
LPUART_WriteByte(LPUART4, data);
}
SDK_ISR_EXIT_BARRIER;
}

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主函数中

uint8_t g_tipString[10] = {0x30,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39};
int main(void)
{
/* Define the init structure for the output LED pin*/
gpio_pin_config_t led_config = {kGPIO_DigitalOutput, 0, kGPIO_NoIntmode};
/* Board pin, clock, debug console init */
BOARD_ConfigMPU();
BOARD_InitPins();
BOARD_BootClockRUN();
BOARD_InitDebugConsole();
BOARD_InitBootPeripherals();
/* Print a note to terminal. */
PRINTF("\r\n GPIO Driver example\r\n");
PRINTF("\r\n The LED is blinking.\r\n");
/* Init output LED GPIO. */
GPIO_PinInit(EXAMPLE_LED_GPIO, EXAMPLE_LED_GPIO_PIN, &led_config);
while (1)
{
SDK_DelayAtLeastUs(1000000, SDK_DEVICE_MAXIMUM_CPU_CLOCK_FREQUENCY);
#if (defined(FSL_FEATURE_IGPIO_HAS_DR_TOGGLE) && (FSL_FEATURE_IGPIO_HAS_DR_TOGGLE == 1))
GPIO_PortToggle(EXAMPLE_LED_GPIO, 1u << EXAMPLE_LED_GPIO_PIN);
// Usart4_Send_Strings("\r\nABCDEFGHIJIKLMN.\r\n");
Usart4_Send_Datas(g_tipString, 10);
PRINTF("\r\n ABCDEFGHIJIKLMN.\r\n");
#else
if (g_pinSet)
{
GPIO_PinWrite(EXAMPLE_LED_GPIO, EXAMPLE_LED_GPIO_PIN, 0U);
g_pinSet = false;
}
else
{
GPIO_PinWrite(EXAMPLE_LED_GPIO, EXAMPLE_LED_GPIO_PIN, 1U);
g_pinSet = true;
}
#endif /* FSL_FEATURE_IGPIO_HAS_DR_TOGGLE */
}
}

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结果也比较简单，串口1打印：ABCDEFGHIJIKLMN.
串口4打印：0123456789
LED灯，闪烁，频率1Hz（不太精确，因为主函数中有发送的函数）数据.png

结合SDK上手RT1010相对比较快捷，底层不用自己动手去写，只需要自己去调用相应的API去实现相应的功能

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基于RT1010-学习上手NXPMCU的SDK代码包和IDE

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