基于新唐M0的M0516LAN的SIM900A的驱动测试

元旦放假，急于赶一个小项目，做了一个M0516LAN驱动SIM900A的测试。第一次用SIM900A，其中遇到几个小问题，调了好久，也问过群里用过SIM900A的几位朋友才调通，在此感谢。最弱智的问题是我把NRESET接到了PWM3上，然后又启动了PWM3，虽然后面把P43置成IO输出却不成功，然后大半晚上就那么悲剧掉了。新唐的库是置成了复用功能再想置回IO，需要先DrvGPIO_InitFunction(E_FUNC_GPIO);才能配置IO功能的。我后来还是不启动PWM就通过了开机过程。只要SIM900A开机了，NETLIGHT的LED就会闪烁，不管有没有SIM卡。另外，所有SIM900A的AT命令都是以“”结束的。

“sim900a.c ”文件源码如下：

#include
#include

#include "DriverDrvUART.h"
#include "DriverDrvGPIO.h"
#include "DriverDrvSYS.h"

#define PWRKEY E_PORT2, E_PIN1
#define NRESETE_PORT4, E_PIN3
#define STATUS E_PORT2, E_PIN3
#define RIE_PORT3, E_PIN2
#define CTSE_PORT0, E_PIN0
/*
_________________________________________________
|M0516LANSIM900A|
||
|P21PWRKEY---->PWRKEY|
|P43NRESET---->NRESET|
|P23STATUS<----STATUS|
|P32RI<----RI|
|P00CTS1<----CTS|
|P13TXD1---->RXD|
|P12RXD1<----TXD|
|_______________________________________________|
*/
int UART1_init(void)
{
STR_UART_T sParam;

/* Set UART1 Pin */
DrvGPIO_InitFunction(E_FUNC_UART1);
//outpw(&SYS->P1_MFP, (inpw(&SYS->P1_MFP) | (0x3<10)) & ~(0x3<2));
//outpw(&SYS->P0_MFP, (inpw(&SYS->P0_MFP) | (0x3<8)) & ~(0x3<0));

/* Select UART1 Clock Source From 12Mhz*/
DrvSYS_SelectIPClockSource(E_SYS_UART_CLKSRC,0);

/* UART1 Setting */
sParam.u32BaudRate = 9600;
sParam.u8cDataBits = DRVUART_DATABITS_8;
sParam.u8cStopBits = DRVUART_STOPBITS_1;
sParam.u8cParity = DRVUART_PARITY_NONE;
sParam.u8cRxTriggerLevel= DRVUART_FIFO_1BYTES;

if(DrvUART_Open(UART_PORT1,&sParam) != E_SUCCESS)
{
printf("UART1 open failed");
return FALSE;
}
/* Enable Interrupt and install the call back function */
//DrvUART_EnableInt(UART_PORT1, (DRVUART_RLSINT | DRVUART_RDAINT),UART1_INT_HANDLE);

/* Disable Interrupt */
//DrvUART_DisableInt(UART_PORT1,DRVUART_RLSINT | DRVUART_THREINT | DRVUART_RDAINT);

return TRUE;
}

int SIM900A_Open(void)
{
int dly;

DrvGPIO_ClrBit(PWRKEY);
for(dly=0;dly<2000;dly++)DrvSYS_Delay(1000); //delay 1S
DrvGPIO_SetBit(PWRKEY);

for(dly=0;dly<3000;dly++)DrvSYS_Delay(1000); //delay 3S
if(DrvGPIO_GetBit(STATUS))
{
printf("SIM900A Open Success!!!");
return 1;
}
else
{
printf("SIM900A Open Failure!!!");
return 0;
}
}

int SIM900A_Close(void)
{
int dly;

DrvGPIO_ClrBit(PWRKEY);
for(dly=0;dly<6000;dly++)DrvSYS_Delay(1000); //delay 1S-5S
DrvGPIO_SetBit(PWRKEY);

for(dly=0;dly<4000;dly++)DrvSYS_Delay(1000); //delay 2S

if(DrvGPIO_GetBit(STATUS))
{
printf("SIM900A Close Failure!!!");
return 1;
}
else
{
printf("SIM900A Close Success!!!");
return 0;
}
}

int SIM900A_Reset(void)
{
int dly;

DrvGPIO_ClrBit(NRESET);
DrvSYS_Delay(100); //delay 20uS-50uS
DrvGPIO_SetBit(NRESET);

for(dly=0;dly<2000;dly++)DrvSYS_Delay(1000); //delay 2S
if(DrvGPIO_GetBit(STATUS)==1)
return 1;
else
return 0;
}
int SIM900A_init(void)
{
int ret =0;

DrvGPIO_Open(STATUS, E_IO_INPUT);
DrvGPIO_Open(RI, E_IO_INPUT);
DrvGPIO_Open(CTS, E_IO_INPUT);
DrvGPIO_Open(PWRKEY, E_IO_OUTPUT);
DrvGPIO_Open(NRESET, E_IO_OUTPUT);

DrvGPIO_SetBit(PWRKEY);
DrvGPIO_SetBit(NRESET);

ret = SIM900A_Open();
UART1_init();

return ret;
}

int SIM900A_gets(char *buf)
{
int ret=0;
int dly=3000000;// delay 3S

while(dly-->1)
{
if(UART1->FSR.RX_EMPTY == 0 )
{
*buf++ =UART1->DATA;//printf("%c",*(buf-1));
ret++;dly=10000;//delay 10ms
}
DrvSYS_Delay(1); //delay 1us
}
return ret;
}

void SIM900A_puts(const char *buf)
{
while(*buf)
{
while(UART1->FSR.TX_FULL == 1);
UART1->DATA =(*buf++)&0xff;//printf("%c",*(buf-1));
}
}

// AT+CPOWD=1 //Power down
// AT+CFUN=x //Power Saving
// AT+CBC//monitor the supply voltage
// AT+IPR=x//fixed baud rate ,“RDY” is received
// AT+CSCLK=1//enable the SLEEP mode
// AT+CMIC//adjust the input gain level of microphone
// AT+SIDET//set the side-tone level
// AT+CLVL//adjust the output gain level
// AT+CADC//read the voltage value on ADC

void SIM900A_test(void)
{
char buffer[128];

printf("");
printf("*** 9G-M0516 V1.00 Build byyuanxihua@21cn.comon ("__DATE__ " - " __TIME__ ")");
printf("*** 9G-M0516 V1.00 Rebooting ...");