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Savestate ! RDS (only PSN) tx

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furrtek 2015-08-23 05:08:38 +02:00
parent 14ada9e132
commit 8e0210f944
24 changed files with 459 additions and 45 deletions
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30
firmware/baseband/baseband_dma.cpp
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@ -20,6 +20,7 @@
*/
#include "baseband_dma.hpp"
#include "portapack_shared_memory.hpp"
#include <cstdint>
#include <cstddef>
@ -34,6 +35,8 @@ using namespace lpc43xx;
namespace baseband {
namespace dma {
int quitt = 0;
constexpr uint32_t gpdma_ahb_master_sgpio = 0;
constexpr uint32_t gpdma_ahb_master_memory = 1;
@ -105,8 +108,14 @@ static Semaphore semaphore;
static volatile const gpdma::channel::LLI* next_lli = nullptr;
static void transfer_complete() {
void test() {
quitt = 1;
chSemSignalI(&semaphore);
}
void transfer_complete() {
next_lli = gpdma_channel_sgpio.next_lli();
quitt = 0;
/* TODO: Is Mailbox the proper synchronization mechanism for this? */
//chMBPostI(&mailbox, 0);
chSemSignalI(&semaphore);
@ -162,6 +171,7 @@ baseband::buffer_t wait_for_rx_buffer() {
//msg_t msg;
//const auto status = chMBFetch(&mailbox, &msg, TIME_INFINITE);
const auto status = chSemWait(&semaphore);
if (quitt) return { nullptr, 0 };
if( status == RDY_OK ) {
const auto next = next_lli;
if( next ) {
@ -176,5 +186,23 @@ baseband::buffer_t wait_for_rx_buffer() {
}
}
baseband::buffer_t wait_for_tx_buffer() {
//msg_t msg;
//const auto status = chMBFetch(&mailbox, &msg, TIME_INFINITE);
const auto status = chSemWait(&semaphore);
if( status == RDY_OK ) {
const auto next = next_lli;
if( next ) {
const size_t next_index = next - &lli_loop[0];
const size_t free_index = (next_index + transfers_per_buffer - 2) & transfers_mask;
return { reinterpret_cast<sample_t*>(lli_loop[free_index].srcaddr), transfer_samples };
} else {
return { nullptr, 0 };
}
} else {
return { nullptr, 0 };
}
}
} /* namespace dma */
} /* namespace baseband */