Zack Buhman
10d17d3c98
This combines my iso9660 parsing code, with all of the prior gdrom packet interface / command code. The example, on real Dreamcast hardware, displays the first 2048 bytes [1] of every file in the root directory on the serial console. [1] or the size of the file, whichever is smaller
94 lines
1.9 KiB
C++
94 lines
1.9 KiB
C++
#include <cstdint>
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#include "sh7091.hpp"
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#include "sh7091_bits.hpp"
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#include "string.hpp"
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namespace serial {
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void init(uint8_t bit_rate)
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{
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using namespace scif;
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sh7091.SCIF.SCSCR2 = 0;
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sh7091.SCIF.SCSMR2 = 0;
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sh7091.SCIF.SCBRR2 = bit_rate; // bps = 1562500 / (SCBRR2 + 1)
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sh7091.SCIF.SCFCR2 = scfcr2::tfrst::reset_operation_enabled
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| scfcr2::rfrst::reset_operation_enabled;
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// tx/rx trigger on 1 byte
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sh7091.SCIF.SCFCR2 = 0;
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sh7091.SCIF.SCSPTR2 = 0;
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sh7091.SCIF.SCLSR2 = 0;
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sh7091.SCIF.SCSCR2 = scscr2::te::transmission_enabled
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| scscr2::re::reception_enabled;
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}
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void character(const char c)
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{
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using namespace scif;
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// wait for transmit fifo to become empty
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while ((sh7091.SCIF.SCFSR2 & scfsr2::tdfe::bit_mask) == 0);
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for (int i = 0; i < 10000; i++) {
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asm volatile ("nop;");
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}
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sh7091.SCIF.SCFTDR2 = static_cast<uint8_t>(c);
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}
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void string(const char * s)
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{
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while (*s != '\0') {
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character(*s++);
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}
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}
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void string(const uint8_t * s, uint32_t len)
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{
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while (len > 0) {
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character(*s++);
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len--;
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}
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}
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void hexlify(const uint8_t n)
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{
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constexpr uint32_t length = 2;
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char num_buf[length];
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string::hex<char>(num_buf, length, n);
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character(num_buf[0]);
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character(num_buf[1]);
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}
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template <typename T>
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void integer(const T n, const char end)
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{
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constexpr uint32_t length = (sizeof (T)) * 2;
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char num_buf[length + 1];
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string::hex<char>(num_buf, length, n);
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num_buf[length] = 0;
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string("0x");
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string(num_buf);
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character(end);
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}
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template <typename T>
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void integer(const T n)
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{
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return integer(n, '\n');
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}
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template void integer<uint32_t>(uint32_t param);
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template void integer<uint16_t>(uint16_t param);
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template void integer<uint8_t>(uint8_t param);
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template void integer<uint32_t>(uint32_t param, char end);
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template void integer<uint16_t>(uint16_t param, char end);
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template void integer<uint8_t>(uint8_t param, char end);
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}
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