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added sys locks to time critical lcd updates (#1737)

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Bernd Herzog 2024-01-07 19:50:26 +01:00 committed by GitHub
parent 9d7e06c255
commit ec0f45a488
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1 changed files with 10 additions and 0 deletions
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10
firmware/common/portapack_io.hpp
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@ -191,6 +191,7 @@ class IO {
}
uint32_t io_read() {
chSysLock(); // Dont interrupt time critical tasks
io_stb_assert();
dir_read();
addr_0();
@ -199,6 +200,7 @@ class IO {
__asm__("nop");
const auto switches_raw = data_read();
io_stb_deassert();
chSysUnlock();
return switches_raw;
}
@ -297,6 +299,7 @@ class IO {
}
void lcd_command(const uint32_t value) {
chSysLock(); // Dont interrupt time critical tasks
data_write_high(0); /* Drive high byte (with zero -- don't care) */
dir_write(); /* Turn around data bus, MCU->CPLD */
addr(0); /* Indicate command */
@ -312,9 +315,11 @@ class IO {
lcd_wr_deassert(); /* Complete write operation */
addr(1); /* Set up for data phase (most likely after a command) */
chSysUnlock();
}
void lcd_write_data(const uint32_t value) __attribute__((always_inline)) {
chSysLock(); // Dont interrupt time critical tasks
// NOTE: Assumes and DIR=0 and ADDR=1 from command phase.
data_write_high(value); /* Drive high byte */
__asm__("nop");
@ -325,9 +330,11 @@ class IO {
__asm__("nop");
__asm__("nop");
lcd_wr_deassert(); /* Complete write operation */
chSysUnlock();
}
uint32_t lcd_read_data() {
chSysLock(); // Dont interrupt time critical tasks
// NOTE: Assumes ADDR=1 from command phase.
dir_read();
@ -345,10 +352,12 @@ class IO {
halPolledDelay(18); // 90ns
const auto value_low = data_read();
chSysUnlock();
return (value_high << 8) | value_low;
}
void io_write(const bool address, const uint_fast16_t value) {
chSysLock(); // Dont interrupt time critical tasks
data_write_low(value);
dir_write();
addr(address);
@ -360,6 +369,7 @@ class IO {
__asm__("nop");
__asm__("nop");
io_stb_deassert();
chSysUnlock();
}
/*
void lcd_data_write_command_and_data(