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Fix Wire.begin causing divide by zero

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Fixes: https://github.com/espressif/arduino-esp32/issues/4530
This commit is contained in:
me-no-dev
2020-11-17 02:30:12 +02:00
parent 5b5b61c018
commit a25ccb2ef7
1 changed files with 4 additions and 0 deletions
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4
cores/esp32/esp32-hal-i2c.c
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@ -1798,6 +1798,10 @@ i2c_t * i2cInit(uint8_t i2c_num, int8_t sda, int8_t scl, uint32_t clk_speed){
if(i2c_num >= 2){ if(i2c_num >= 2){
return NULL; return NULL;
} }
if(!clk_speed){
//originally does not change the speed, but getFrequency and setFrequency need to be implemented first.
clk_speed = 100000;
}
i2c_t * out = NULL; i2c_t * out = NULL;
if(i2c_ports[i2c_num] == NULL){ if(i2c_ports[i2c_num] == NULL){
out = (i2c_t*)malloc(sizeof(i2c_t)); out = (i2c_t*)malloc(sizeof(i2c_t));