uint8_t hal_nrf_get_rx_data_source(void)
{
return ((hal_nrf_nop() & (BIT_3|BIT_2|BIT_1)) >> 1);
}
__interrupt void HAL_NRF_ISR(void)
{
u8 status, len, i;
if(!IRQ) {
/** */
// Read and clear IRQ flags from radio
status = hal_nrf_nop();
// if(hal_nrf_ack_flag){
// if((status&0x60) == 0x60){
// hal_nrf_ack_flag = 0;
// }else{
// read_flash_buf(slave_cmd, slave_cmd_request, CMD_LENGTH);
// hal_nrf_write_ack_payload(0, slave_cmd, CMD_LENGTH);
// }
// }
#ifdef SLAVE_DEBUG
hal_nrf_irq_flag = status;
#endif
if(status & (1<< (uint8_t)HAL_NRF_RX_DR)){
do{
len = hal_nrf_read_rx_payload_width();
if(len > 32){
hal_nrf_write_reg (STATUS, (1<< (uint8_t)HAL_NRF_RX_DR));
hal_nrf_rx_sta = HAL_NRF_RX_STA_COM_ERROR;
return;
}
if((hal_nrf_rx_cnt + len + 1) < HAL_NRF_RX_BUF_LEN){
hal_nrf_rx_buf[hal_nrf_rx_wr_index] = len;
hal_nrf_rx_wr_index++;
if(hal_nrf_rx_wr_index == HAL_NRF_RX_BUF_LEN){
hal_nrf_rx_wr_index=0;
}
// hal_nrf_read_payload((u8*)hal_nrf_rx_buf[hal_nrf_rx_wr_index].buf, len);
CSN_LOW();
HAL_NRF_HW_SPI_WRITE(R_RX_PAYLOAD);
while(HAL_NRF_HW_SPI_BUSY) {}
HAL_NRF_HW_SPI_READ();
for(i=0; i<len; i++){
HAL_NRF_HW_SPI_WRITE(0U);
while(HAL_NRF_HW_SPI_BUSY){}
hal_nrf_rx_buf[hal_nrf_rx_wr_index] = HAL_NRF_HW_SPI_READ();
hal_nrf_rx_wr_index++;
if(hal_nrf_rx_wr_index == HAL_NRF_RX_BUF_LEN){
hal_nrf_rx_wr_index=0;
}
}
CSN_HIGH();
hal_nrf_rx_cnt = hal_nrf_rx_cnt+len+1;
}else{
hal_nrf_flush_rx();
hal_nrf_rx_sta = HAL_NRF_RX_STA_BUF_OVF;
/** clear RX_DR */
hal_nrf_write_reg (STATUS, (1<< (uint8_t)HAL_NRF_RX_DR));
break;
}
/** clear RX_DR */
hal_nrf_write_reg (STATUS, (1<< (uint8_t)HAL_NRF_RX_DR));
}while(!hal_nrf_rx_fifo_empty());
}
if(status & (1 << (uint8_t)HAL_NRF_TX_DS)){
hal_nrf_write_reg (STATUS, (1<< (uint8_t)HAL_NRF_TX_DS));
switch(hal_nrf_sta){
case HAL_NRF_STA_TX:
hal_nrf_tx_cmd_flag = 0;
if(hal_nrf_tx_cnt){
hal_nrf_tx_busy = 1;
len = hal_nrf_tx_buf[hal_nrf_tx_rd_index];
hal_nrf_tx_rd_index++;
if(hal_nrf_tx_rd_index == HAL_NRF_TX_BUF_LEN){
hal_nrf_tx_rd_index = 0;
}
hal_nrf_tx_cnt = hal_nrf_tx_cnt-len-1;
// hal_nrf_write_tx_payload(hal_nrf_tx_buf_tmp, len);
CSN_LOW();
HAL_NRF_HW_SPI_WRITE(W_TX_PAYLOAD);
while(HAL_NRF_HW_SPI_BUSY) {}
HAL_NRF_HW_SPI_READ();
for(i=0; i<len; i++){
HAL_NRF_HW_SPI_WRITE(hal_nrf_tx_buf[hal_nrf_tx_rd_index]);
hal_nrf_tx_rd_index++;
if(hal_nrf_tx_rd_index == HAL_NRF_TX_BUF_LEN){
hal_nrf_tx_rd_index = 0;
}
while(HAL_NRF_HW_SPI_BUSY) {} /* wait for byte transfer finished */
HAL_NRF_HW_SPI_READ();
}
CSN_HIGH();
// CE_HIGH();
// T2_START();
t2_start_delay();
}else{
if(hal_nrf_tx_sta == HAL_NRF_TX_STA_IDLE){
/** send end pkt */
hal_nrf_tx_sta = HAL_NRF_TX_STA_DONE;
read_flash_buf(slave_cmd, slave_cmd_end, CMD_LENGTH);
hal_nrf_write_tx_payload(slave_cmd, CMD_LENGTH);
hal_nrf_tx_cmd_flag = 2;
// CE_HIGH();
// T2_START();
t2_start_delay();
}else{
hal_nrf_tx_sta = HAL_NRF_TX_STA_IDLE;
hal_nrf_sta = HAL_NRF_STA_RX;
CE_LOW();
hal_nrf_flush_tx();
hal_nrf_flush_rx();
/** return to RX mode */
hal_nrf_set_operation_mode(HAL_NRF_PRX);
CE_HIGH();
hal_nrf_tx_busy = 0;
}
}
break;
case HAL_NRF_STA_RX:
/** ack payload send */
break;
case HAL_NRF_STA_TX_CMD:
hal_nrf_sta = HAL_NRF_STA_RX;
CE_LOW();
hal_nrf_flush_tx();
hal_nrf_flush_rx();
/** return to RX mode */
hal_nrf_set_operation_mode(HAL_NRF_PRX);
CE_HIGH();
hal_nrf_tx_busy = 0;
hal_nrf_tx_cmd_flag = 0;
break;
}
}
if(status & (1 << (uint8_t)HAL_NRF_MAX_RT)){
#if 0
// When a MAX_RT interrupt occurs the TX payload will not be removed from the TX FIFO.
// If the packet is to be discarded this must be done manually by flushing the TX FIFO.
// Alternatively, CE_PULSE() can be called re-starting transmission of the payload.
// (Will only be possible after the radio irq flags are cleared)
hal_nrf_flush_tx();
hal_nrf_flush_rx();
hal_nrf_set_operation_mode(HAL_NRF_PRX);
CE_HIGH();
hal_nrf_sta=HAL_NRF_STA_RX;
/** discard all data in buffer */
hal_nrf_tx_busy = 0;
hal_nrf_tx_cnt = 0;
hal_nrf_tx_rd_index =0;
hal_nrf_tx_wr_index = 0;
// hal_nrf_flush_rx();
// hal_nrf_rx_cnt = 0;
// hal_nrf_rx_rd_index =0;
// hal_nrf_rx_wr_index = 0;
/** set timeout flag */
hal_nrf_timeout = 1;
hal_nrf_write_reg (STATUS, (1<< (uint8_t)HAL_NRF_MAX_RT));
#else
hal_nrf_write_reg (STATUS, (1<< (uint8_t)HAL_NRF_MAX_RT));
switch(hal_nrf_sta){
case HAL_NRF_STA_TX:
hal_nrf_tx_cmd_flag = 0;
if(hal_nrf_tx_cnt){
hal_nrf_tx_busy = 1;
len = hal_nrf_tx_buf[hal_nrf_tx_rd_index];
hal_nrf_tx_rd_index++;
if(hal_nrf_tx_rd_index == HAL_NRF_TX_BUF_LEN){
hal_nrf_tx_rd_index = 0;
}
hal_nrf_tx_cnt = hal_nrf_tx_cnt-len-1;
// hal_nrf_write_tx_payload(hal_nrf_tx_buf_tmp, len);
CSN_LOW();
HAL_NRF_HW_SPI_WRITE(W_TX_PAYLOAD);
while(HAL_NRF_HW_SPI_BUSY) {}
HAL_NRF_HW_SPI_READ();
for(i=0; i<len; i++){
HAL_NRF_HW_SPI_WRITE(hal_nrf_tx_buf[hal_nrf_tx_rd_index]);
hal_nrf_tx_rd_index++;
if(hal_nrf_tx_rd_index == HAL_NRF_TX_BUF_LEN){
hal_nrf_tx_rd_index = 0;
}
while(HAL_NRF_HW_SPI_BUSY) {} /* wait for byte transfer finished */
HAL_NRF_HW_SPI_READ();
}
CSN_HIGH();
// CE_HIGH();
// T2_START();
t2_start_delay();
}else{
if(hal_nrf_tx_sta == HAL_NRF_TX_STA_IDLE){
/** send end pkt */
hal_nrf_tx_sta = HAL_NRF_TX_STA_DONE;
read_flash_buf(slave_cmd, slave_cmd_end, CMD_LENGTH);
hal_nrf_write_tx_payload(slave_cmd, CMD_LENGTH);
hal_nrf_tx_cmd_flag = 2;
// CE_HIGH();
// T2_START();
t2_start_delay();
}else{
hal_nrf_tx_sta = HAL_NRF_TX_STA_IDLE;
hal_nrf_sta = HAL_NRF_STA_RX;
CE_LOW();
hal_nrf_flush_tx();
hal_nrf_flush_rx();
/** return to RX mode */
hal_nrf_set_operation_mode(HAL_NRF_PRX);
CE_HIGH();
hal_nrf_tx_busy = 0;
}
}
break;
case HAL_NRF_STA_RX:
/** ack payload send */
break;
case HAL_NRF_STA_TX_CMD:
hal_nrf_sta = HAL_NRF_STA_RX;
CE_LOW();
hal_nrf_flush_tx();
hal_nrf_flush_rx();
/** return to RX mode */
hal_nrf_set_operation_mode(HAL_NRF_PRX);
CE_HIGH();
hal_nrf_tx_busy = 0;
hal_nrf_tx_cmd_flag = 0;
break;
}
#endif
}
}
}
uint8_t hal_nrf_get_irq_flags(void)
{
return hal_nrf_nop() & (BIT_6|BIT_5|BIT_4);
}