参数资料
型号: ADUC7033BSTZ-88-RL
厂商: Analog Devices Inc
文件页数: 128/140页
文件大小: 0K
描述: IC BATT SENSOR PREC 48LQFP
标准包装: 2,000
功能: 电池监控器
电源电压: 3.5 V ~ 18 V
工作温度: -40°C ~ 115°C
安装类型: 表面贴装
封装/外壳: 48-LQFP
供应商设备封装: 48-LQFP(7x7)
包装: 带卷 (TR)
ADuC7033
Example LIN Hardware Synchronization Routine
Consider the following C-Source Code LIN initialization routine.
void LIN_INIT(void )
{
char HVstatus;
GPCON = 0x110000;
LHSCON0 = 0x1;
do{
// Enable LHS on GPIO pins
// Reset LHS interface
HVDAT = 0x02;
HVCON = 0x08;
do{
HVstatus = HVCON;
}
//
//
Enable normal LIN TX mode
Write to Config0
while(HVstatus & 0x1);//
}
while (!(HVstatus & 0x4)); //
while((LHSSTA & 0x20) == 0 )
Wait until command is finished
Transmit command is correct
{
}
// Wait until the LHS hardware is reset
}
LHSCON1 = 0x062;
LHSCON0 = 0x0114;
LHSVAL1 = 0x03F;
//
//
//
//
//
//
//
//
//
//
//
//
Sets Stop Edge as the fifth falling edge
and the Start Edge as the first falling
edge in the sync byte
Gates UART RX line, ensure no interference
from the LIN into the UART
Selects the stop condition as a falling edge
Enables generation of an Interrupt on the
stop condition
Enables the interface
Set number of 131 kHz periods to generate
a break interrupt 0x3F / 131 kHz ~ 480 μ s
which is just over 9.5 tbits
Using this configuration, LHSVAL1 begins to count on the first
falling edge received on the LIN bus. If LHSVAL1 exceeds the
value written to LHSVAL1, in this case 0x3F, a break compare
interrupt is generated.
On the next falling edge, LHSVAL0 begins counting. LHSVAL0
monitors the number of falling edges and compares this to the
the fifth falling edge of the sync byte. When this number of
falling edges is received, a stop condition interrupt is generated.
It is at this point that the UART is configured to receive the
protected identifier.
The UART must not be ungated (through LHSCON0[8]) before
the LIN bus returns high. If this occurs, UART communication
value written to LHSCON1[7:4]. In this example, the number of
edges to monitor is the sixth falling edge of the LIN frame, or
errors can occur. This process is shown in detail in Figure
Example code to ensure this is as follows:
Rev. B | Page 128 of 140
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