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stlink: Check for baite variant. (#519) 

If PC13/14 float and PB11 is pulled high, recognize as baite.
Handle as rev.1 board. Deciphered from:
http://www.avrki.ru/picture/articles/samodelniy_st_link_v2/shemf_st_link_v2.jpg
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UweBonnes 2019-09-05 20:37:16 +02:00 committed by GitHub
parent 609e6b135d
commit 3a6947a68f
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1 changed files with 5 additions and 1 deletions
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6
src/platforms/stlink/stlink_common.c
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@ -38,16 +38,20 @@ uint32_t detect_rev(void)
rcc_periph_clock_enable(RCC_CRC);
/* First, get Board revision by pulling PC13/14 up. Read
* 11 for ST-Link V1, e.g. on VL Discovery, tag as rev 0
* 11 for Baite, PB11 pulled high, tag as rev 1
* 00 for ST-Link V2, e.g. on F4 Discovery, tag as rev 1
* 01 for ST-Link V2, else, tag as rev 1
*/
gpio_set_mode(GPIOC, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_PULL_UPDOWN, GPIO14 | GPIO13);
gpio_set(GPIOC, GPIO14 | GPIO13);
gpio_set_mode(GPIOB, GPIO_MODE_INPUT,
GPIO_CNF_INPUT_PULL_UPDOWN, GPIO11);
gpio_clear(GPIOB, GPIO11);
for (int i = 0; i < 100; i ++)
res = gpio_get(GPIOC, GPIO13);
if (res)
rev = 0;
rev = (gpio_get(GPIOB, GPIO11))? 1 : 0;
else {
/* Check for V2.1 boards.
* PA15/TDI is USE_RENUM, pulled with 10 k to U5V on V2.1,