Example Analysis of JY901 NOTES TM4 Serial Port data Reading

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Serial port reading module data

Here I attach my serial data reading function which is modified on the basis of the routines provided by the manufacturer (although it is very simple, it can save the time of the brother who sees the post).

First, TM4 serial port 1 initializes:

# define UART1Baud 115200void initUART1 () {ROM_SysCtlPeripheralEnable (SYSCTL_PERIPH_GPIOB); ROM_SysCtlPeripheralEnable (SYSCTL_PERIPH_UART1); ROM_GPIOPinConfigure (GPIO_PB0_U1RX); ROM_GPIOPinConfigure (GPIO_PB1_U1TX); ROM_GPIOPinTypeUART (GPIO_PORTB_BASE, GPIO_PIN_0 | GPIO_PIN_1) ROM_UARTConfigSetExpClk (UART1_BASE, ROM_SysCtlClockGet (), UART1Baud, (UART_CONFIG_WLEN_8 | UART_CONFIG_STOP_ONE | UART_CONFIG_PAR_NONE)); ROM_IntEnable (INT_UART1); UARTFIFODisable (UART1_BASE); UARTIntRegister (UART1_BASE,UART1_Handler); ROM_UARTIntEnable (UART1_BASE,UART _ INT_RX | UART_INT_RT);}

Then interpret it according to the agreement of the manual:

Float roll=0,pitch=0,yaw=0; float accX=0,accY=0,accZ=0; float gyrX=0,gyrY=0,gyrZ=0 Void JY901_GetOneByte (U8 data) {static U8 ucRxBuffer [12]; static U8 ucRxCnt=0; ucRxBuffer [ucRxCnt++] = data; if (ucRxBuffer [0]! = 0x55) {ucRxCnt=0; return } if (ucRxCnt