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hide deprecated code; make USB snippet common for F0/F1/F3

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This commit is contained in:
Edward Emelianov
2024-09-02 18:21:41 +03:00
parent 9166996bff
commit bdbd7d68d9
419 changed files with 3445 additions and 752 deletions
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13
F0:F030,F042,F072/usbcan_ringbuffer/can.c
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@@ -111,14 +111,21 @@ so if TBS1=4 and TBS2=3, sum=8, bit sampling freq is 48/8 = 6MHz
1MBps - 6
*/
static uint16_t oldspeed = 100; // speed of last init
uint16_t CAN_getspeed(){
return oldspeed;
}
// speed - in kbps. @return - current speed
int CAN_setup(uint16_t speed){
static uint16_t oldspeed = 100; // speed of last init
LED_off(LED1);
flood_msg = NULL; // clear for not flood in terminal
incrflood = 0;
if(speed == 0) speed = oldspeed;
else if(speed < 50) speed = 50;
else if(speed > 3000) speed = 3000;
oldspeed = speed;
uint32_t regval = 6000/speed - 1;
oldspeed = 6000 / (regval + 1); // new speed due to register value
uint32_t tmout = 16000000;
// Configure GPIO: PB8 - CAN_Rx, PB9 - CAN_Tx
/* (1) Select AF mode (10) on PB8 and PB9 */
@@ -148,7 +155,7 @@ int CAN_setup(uint16_t speed){
CAN->MCR &=~ CAN_MCR_SLEEP; /* (3) */
CAN->MCR |= CAN_MCR_ABOM; /* allow automatically bus-off */
CAN->BTR = 2 << 20 | 3 << 16 | (6000/speed - 1); /* (4) */
CAN->BTR = 2 << 20 | 3 << 16 | regval; /* (4) */
CAN->MCR &=~ CAN_MCR_INRQ; /* (5) */
tmout = 16000000;
while((CAN->MSR & CAN_MSR_INAK)==CAN_MSR_INAK) if(--tmout == 0) break; /* (6) */