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add modbus RTU

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This commit is contained in:
Edward Emelianov
2024-09-24 18:13:23 +03:00
parent 22a205001a
commit 03772fce3a
9 changed files with 83 additions and 26 deletions
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F1:F103/FX3U/can.c
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@@ -122,6 +122,7 @@ void CAN_setup(uint32_t speed){
uint32_t tmout = 16000000;
// Configure GPIO: PD0 - CAN_Rx, PD1 - CAN_Tx
AFIO->MAPR |= AFIO_MAPR_CAN_REMAP_REMAP3;
AFIO->MAPR |= AFIO_MAPR_SWJ_CFG_DISABLE; // I don't know why, but without this string JTAG works (despite on turning it off in hardware.c)!
GPIOD->CRL = (GPIOD->CRL & ~(CRL(0,0xf)|CRL(1,0xf))) |
CRL(0, CNF_FLINPUT | MODE_INPUT) | CRL(1, CNF_AFPP | MODE_NORMAL);
/* Enable the peripheral clock CAN */