void Nrf24l::send_head()
// Sends a data package to the default address. Be sure to send the correct
// amount of bytes as configured as payload on the receiver.
{
uint8_t status;
status = getStatus();
while (PTX) {
status = getStatus();
//TX_DS 5 0 R/W 数据发送完成中断。当数据发送完成后产生中
//断。如果工作在自动应答模式下，只有当接收到应答信号后此位置一。
//写‘1’清除中断。
//MAX_RT 4 0 R/W 达到最多次重发中断。
//写‘1’清除中断。
//如果MAX_RT 中断产生则必须清除后系统才
//能进行通讯。
if((status & ((1 << TX_DS) | (1 << MAX_RT)))){
PTX = 0;
break;
}
} // Wait until last paket is send
ceLow();
powerUpTx(); // Set to transmitter mode , Power up
csnLow(); // Pull down chip select
spi->transfer( FLUSH_TX ); // Write cmd to flush tx fifo
csnHi(); // Pull up chip select
csnLow(); // Pull down chip select
//W_RX_PAYLOAD 1010 0000 写TX 有效数据：1-32 字节。写操作从字节0 开始。
//应用于发射模式下
spi->transfer( W_TX_PAYLOAD ); // Write cmd to write payload
}
void Nrf24l::send(uint8_t * value)
// Sends a data package to the default address. Be sure to send the correct
// amount of bytes as configured as payload on the receiver.
{
uint8_t status;
status = getStatus();
while (PTX) {
status = getStatus();
if((status & ((1 << TX_DS) | (1 << MAX_RT)))){
PTX = 0;
break;
}
} // Wait until last paket is send
ceLow();
powerUpTx(); // Set to transmitter mode , Power up
csnLow(); // Pull down chip select
spi->transfer( FLUSH_TX ); // Write cmd to flush tx fifo
csnHi(); // Pull up chip select
csnLow(); // Pull down chip select
spi->transfer( W_TX_PAYLOAD ); // Write cmd to write payload
transmitSync(value,payload); // Write payload
csnHi(); // Pull up chip select
ceHi(); // Start transmission
}
void Nrf24l::send(uint8_t * value)
// Sends a data package to the default address. Be sure to send the correct
// amount of bytes as configured as payload on the receiver.
{
uint8_t status;
status = getStatus();
while (PTX) {
status = getStatus();
if((status & ((1 << TX_DS) | (1 << MAX_RT)))){
PTX = 0;
break;
}
} // Wait until last paket is send
ceLow();
powerUpTx(); // Set to transmitter mode , Power up
flushTx();
nrfSpiWrite(W_TX_PAYLOAD, value, false, payload); // Write payload
ceHi(); // Start transmission
ceLow();
}
void send_rf(uint8_t * value)
// Sends a data package to the default address. Be sure to send the correct
// amount of bytes as configured as payload on the receiver.
{
uint8_t status;
status = getStatus();
while (PTX) {
status = getStatus();
if((status & ((1 << TX_DS) | (1 << MAX_RT)))){
PTX = 0;
break;
}
} // Wait until last paket is send
ceLow();
powerUpTx(); // Set to transmitter mode , Power up
csnLow();
uint8_t result = FLUSH_TX;
SSPSend(&result, 1);
csnHi();
uint8_t* rx = (uint8_t*)malloc(sizeof(uint8_t)*(payload+1));
rx[0] = W_TX_PAYLOAD;
uint8_t a;
for(a = 1; a < payload+1; a++){
rx[a] = value[a-1];
}
csnLow();
SSPSend(rx, payload+1);
free(rx);
csnHi();
ceHi(); // Start transmission
while(isSending());
}
