/* extended erase memory page */
private async Task ExtendedEraseSpecial(STExtendedEraseMode mode)
{
/* command word */
var tx = new byte[5];
/* temporary storage for response bytes */
var tmp = new byte[1];
/* command code */
tx[0] = (byte)STCmds.EXT_ERASE;
/* checksum */
tx[1] = ComputeChecksum(tx, 0, 1);
/* erase single page */
tx[2] = (byte)((int)mode >> 8);
tx[3] = (byte)((int)mode >> 0);
/* checksum */
tx[4] = (byte)~ComputeChecksum(tx, 2, 3);
/* try to send command and wait for response */
try {
/* send bytes */
await SerialWrite(tx, 0, 2);
/* wait for response code */
await SerialRead(tmp, 0, 1);
/* check response code */
if (tmp[0] != (byte)STResps.ACK)
{
throw new STBootException("Command Rejected");
}
/* send address */
await SerialWrite(tx, 2, 3);
/* wait for response code. use longer timeout, erase might
* take a while or two. */
await SerialRead(tmp, 0, 1, 10000);
/* check response code */
if (tmp[0] != (byte)STResps.ACK)
{
throw new STBootException("Special code Rejected");
}
/* oops, something baaad happened! */
} catch (Exception) {
/* release semaphore */
sem.Release();
/* re-throw */
throw;
}
/* release semaphore */
sem.Release();
}
/******************************************************************************
* 擦除制定页特殊模式 指令
* async 是.NET 4.5之后才用的关键字，用于方便地处理异步操作
*
******************************************************************************/
private async Task ExtendedEraseSpecial(STExtendedEraseMode mode)
{
/* 发送数组 */
var tx = new byte[5];
/* 接收缓冲数组 */
var tmp = new byte[1];
/* 赋值 */
tx[0] = (byte)STCmds.EXT_ERASE;
/* 校验 */
tx[1] = ComputeChecksum(tx, 0, 1);
/* 拆分 */
tx[2] = (byte)((int)mode >> 8);
tx[3] = (byte)((int)mode >> 0);
/* 校验 */
tx[4] = (byte)~ComputeChecksum(tx, 2, 3);
/* 发送命令并等待应答 */
try {
/* 发送指令 */
await SerialWrite(tx, 0, 2);
/* 等待应答 */
await SerialRead(tmp, 0, 1);
/* 判断是否为ACK */
if (tmp[0] != (byte)STResps.ACK)
{
throw new STBootException("Command Rejected");
}
/* 发送模式字节 */
await SerialWrite(tx, 2, 3);
/* 等待，设置超时时间为1000ms */
await SerialRead(tmp, 0, 1, 10000);
/* 是否为ACK */
if (tmp[0] != (byte)STResps.ACK)
{
throw new STBootException("Special code Rejected");
}
/* 出错 */
} catch (Exception) {
/* 释放信号量 */
sem.Release();
/* */
throw;
}
/* 释放信号量 */
sem.Release();
}
/* extended erase memory page */
private async Task ExtendedEraseSpecial(STExtendedEraseMode mode)
{
/* command word */
var tx = new byte[5];
/* temporary storage for response bytes */
var tmp = new byte[1];
/* command code */
tx[0] = (byte)STCmds.EXT_ERASE;
/* checksum */
tx[1] = ComputeChecksum(tx, 0, 1);
/* erase single page */
tx[2] = (byte)((int)mode >> 8);
tx[3] = (byte)((int)mode >> 0);
/* checksum */
tx[4] = (byte)~ComputeChecksum(tx, 2, 3);
/* try to send command and wait for response */
try {
/* send bytes */
await SerialWrite(tx, 0, 2);
/* wait for response code */
await SerialRead(tmp, 0, 1);
/* check response code */
if (tmp[0] != (byte)STResps.ACK)
throw new STBootException("Command Rejected");
/* send address */
await SerialWrite(tx, 2, 3);
/* wait for response code. use longer timeout, erase might
* take a while or two. */
await SerialRead(tmp, 0, 1, 10000);
/* check response code */
if (tmp[0] != (byte)STResps.ACK)
throw new STBootException("Special code Rejected");
/* oops, something baaad happened! */
} catch (Exception) {
/* release semaphore */
sem.Release();
/* re-throw */
throw;
}
/* release semaphore */
sem.Release();
}
