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stm8s
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main: replace I²C library with software implementation

This commit is contained in:
King Kévin 2021-08-17 11:31:42 +02:00
parent e988151465
commit 3c1b0ca7ea
1 changed files with 11 additions and 19 deletions
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30
main.c
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@ -8,7 +8,7 @@
#include "stm8s.h"
#include "main.h"
#include "i2c_master.h"
#include "softi2c_master.h"
#include "eeprom_blockprog.h"
// blink RUN LED to show error
@ -180,7 +180,7 @@ static bool save_edid(void)
// return if succeeded
static bool read_edid(void)
{
if (!i2c_master_setup(5)) {
if (!softi2c_master_setup(10)) {
puts("I²C setup failed");
return false;
}
@ -191,12 +191,9 @@ static bool read_edid(void)
uint8_t data[I2C_EEPROM_PAGE_SIZE]; // data from page
bool same = false; // if the data read is the same
while (!same) { // read until the data is the same
const enum i2c_master_rc rc = i2c_master_address_read(I2C_SLAVE, false, address, ARRAY_LENGTH(address), data, ARRAY_LENGTH(data)); // read I²C EEPROM data
if (I2C_MASTER_RC_NONE != rc) {
puts("I²C read failed (");
putc('0' + rc);
putc(')');
i2c_master_reset(); // try to clear any I²C issue
const bool rc = softi2c_master_address_read(I2C_SLAVE, address, ARRAY_LENGTH(address), data, ARRAY_LENGTH(data)); // read I²C EEPROM data
if (!rc) {
puts("I²C read failed");
return false;
}
// check if the data is the same and copy it to EDID
@ -209,7 +206,7 @@ static bool read_edid(void)
}
}
}
i2c_master_release(); // release I²C again
softi2c_master_release(); // release I²C again
return true;
}
@ -218,7 +215,7 @@ static bool read_edid(void)
// return if succeeded
static bool write_edid(void)
{
if (!i2c_master_setup(5)) {
if (!softi2c_master_setup(10)) {
puts("I²C setup failed");
return false;
}
@ -226,19 +223,14 @@ static bool write_edid(void)
const uint16_t length = edid_length();
for (uint16_t i = 0; i < length; i += I2C_EEPROM_PAGE_SIZE) {
const uint8_t address[] = {i};
const enum i2c_master_rc rc = i2c_master_address_write(I2C_SLAVE, false, address, ARRAY_LENGTH(address), &edid[i], I2C_EEPROM_PAGE_SIZE); // write I²C EEPROM page
if (I2C_MASTER_RC_NONE != rc) {
puts("I²C write failed (");
putc('0' + rc);
putc(')');
if (I2C_MASTER_RC_BUS_ERROR == rc) {
i2c_master_reset(); // try to clear any I²C issue
}
const bool rc = softi2c_master_address_write(I2C_SLAVE, address, ARRAY_LENGTH(address), &edid[i], I2C_EEPROM_PAGE_SIZE); // write I²C EEPROM page
if (!rc) {
puts("I²C write failed");
return false;
}
wait_10us((5 + 1) * 100); // wait 5 ms for the page write to complete
}
i2c_master_release(); // release I²C again
softi2c_master_release(); // release I²C again
return true;
}