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fix RTC for Sennen Kazoku

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This commit is contained in:
Robert Peip
2020-11-20 06:23:31 +01:00
parent 118ae935ff
commit 367e2513df
1 changed files with 19 additions and 9 deletions
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28
rtl/gba_gpioRTCSolarGyro.vhd
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@@ -76,6 +76,10 @@ architecture arch of gba_gpioRTCSolarGyro is
signal rtc_change : std_logic := '0';
signal RTC_saveLoaded_1 : std_logic := '0';
signal saveCTL : std_logic := '0';
signal saveCTL_next : std_logic := '0';
signal CTLval : std_logic_vector(7 downto 0) := x"40";
signal RTC_timestamp : std_logic_vector(31 downto 0);
signal diffSeconds : unsigned(31 downto 0) := (others => '0');
@@ -127,6 +131,11 @@ begin
-- overwritten later
GPIO_done <= '0';
saveRTC_next <= '0';
saveCTL_next <= '0';
if (saveCTL_next = '1') then
CTLval <= data(0);
end if;
-- precalc for timing purpose
case (solar_in) is
@@ -264,15 +273,15 @@ begin
end if;
-- RTC
if (selected(2) = '1') then
--if (selected(2) = '1') then -- don't check for clock as Sennen Kazoku doesn't handle it "correct"
RTC_inuse <= '1';
if (state = IDLE and retval = x"1" and GPIO_Dout = x"5") then
state <= COMMANDSTATE;
bits <= (others => '0');
command <= (others => '0');
RTC_inuse <= '1';
elsif (retval(0) = '0' and GPIO_Dout(0) = '1') then -- bit transfer
@@ -293,18 +302,17 @@ begin
case (new_command) is
when x"60" =>
-- not sure what this command does but it doesn't take parameters, maybe it is a reset or stop
when x"60" => -- reset
state <= IDLE;
when x"62" =>
-- this sets the control state but not sure what those values are
when x"62" => --control state
state <= READDATA;
dataLen <= to_unsigned(1, dataLen'length);
saveCTL <= '1';
when x"63" =>
dataLen <= to_unsigned(1, dataLen'length);
data(0) <= x"40";
data(0) <= CTLval;
state <= DATASTATE;
when x"64" =>
@@ -361,7 +369,9 @@ begin
bits <= (others => '0');
state <= IDLE;
saveRTC_next <= saveRTC;
saveCTL_next <= saveCTL;
saveRTC <= '0';
saveCTL <= '0';
end if;
end if;
@@ -375,7 +385,7 @@ begin
retval <= GPIO_Dout;
end if;
end if;
--end if;
when others => null;
end case;